4112561291 has 4 divisors (see below), whose sum is σ = 4114415184. Its totient is φ = 4110707400.

The previous prime is 4112561287. The next prime is 4112561303. The reversal of 4112561291 is 1921652114.

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 4112561291 - 2² = 4112561287 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4112561221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 923615 + ... + 928056.

It is an arithmetic number, because the mean of its divisors is an integer number (1028603796).

Almost surely, 2^4112561291 is an apocalyptic number.

4112561291 is a deficient number, since it is larger than the sum of its proper divisors (1853893).

4112561291 is a wasteful number, since it uses less digits than its factorization.

4112561291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1853892.

The product of its digits is 4320, while the sum is 32.

The square root of 4112561291 is about 64129.2545645121. The cubic root of 4112561291 is about 1602.1535182729.

The spelling of 4112561291 in words is "four billion, one hundred twelve million, five hundred sixty-one thousand, two hundred ninety-one".