56117900565 has 24 divisors (see below), whose sum is σ = 99533148000. Its totient is φ = 29233509984.

The previous prime is 56117900561. The next prime is 56117900581. The reversal of 56117900565 is 56500971165.

56117900565 is a `hidden beast` number, since 5 + 6 + 11 + 79 + 0 + 0 + 565 = 666.

It is not a de Polignac number, because 56117900565 - 2² = 56117900561 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 56117900565.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56117900561) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14498815 + ... + 14502684.

It is an arithmetic number, because the mean of its divisors is an integer number (4147214500).

Almost surely, 2^56117900565 is an apocalyptic number.

It is an amenable number.

56117900565 is a deficient number, since it is larger than the sum of its proper divisors (43415247435).

56117900565 is a wasteful number, since it uses less digits than its factorization.

56117900565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29001553 (or 29001550 counting only the distinct ones).

The product of its (nonzero) digits is 283500, while the sum is 45.

The spelling of 56117900565 in words is "fifty-six billion, one hundred seventeen million, nine hundred thousand, five hundred sixty-five".