117507811 has 4 divisors (see below), whose sum is σ = 117529632. Its totient is φ = 117485992.

The previous prime is 117507787. The next prime is 117507821. The reversal of 117507811 is 118705711.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 117507811 - 2¹¹ = 117505763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (117507821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3606 + ... + 15748.

It is an arithmetic number, because the mean of its divisors is an integer number (29382408).

Almost surely, 2^117507811 is an apocalyptic number.

117507811 is a deficient number, since it is larger than the sum of its proper divisors (21821).

117507811 is an equidigital number, since it uses as much as digits as its factorization.

117507811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21820.

The product of its (nonzero) digits is 1960, while the sum is 31.

The square root of 117507811 is about 10840.1019829151. The cubic root of 117507811 is about 489.8039073756.

The spelling of 117507811 in words is "one hundred seventeen million, five hundred seven thousand, eight hundred eleven".