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2101130505 = 32561975431
BaseRepresentation
bin111110100111100…
…1011010100001001
312102102122111012100
41331033023110021
513300342134010
6544254304013
7103032212625
oct17517132411
95372574170
102101130505
119890404a1
124a77b8009
132763c55b6
1415d0a2185
15c46dc2c0
hex7d3cb509

2101130505 has 24 divisors (see below), whose sum is σ = 3647891520. Its totient is φ = 1118777760.

The previous prime is 2101130491. The next prime is 2101130509. The reversal of 2101130505 is 5050311012.

It is not a de Polignac number, because 2101130505 - 211 = 2101128457 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2101130509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9861 + ... + 65570.

It is an arithmetic number, because the mean of its divisors is an integer number (151995480).

Almost surely, 22101130505 is an apocalyptic number.

It is an amenable number.

2101130505 is a deficient number, since it is larger than the sum of its proper divisors (1546761015).

2101130505 is a wasteful number, since it uses less digits than its factorization.

2101130505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76061 (or 76058 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 18.

The square root of 2101130505 is about 45838.0901107365. The cubic root of 2101130505 is about 1280.8089175976.

Adding to 2101130505 its reverse (5050311012), we get a palindrome (7151441517).

The spelling of 2101130505 in words is "two billion, one hundred one million, one hundred thirty thousand, five hundred five".

Divisors: 1 3 5 9 15 45 619 1857 3095 5571 9285 27855 75431 226293 377155 678879 1131465 3394395 46691789 140075367 233458945 420226101 700376835 2101130505