56915697655 has 8 divisors (see below), whose sum is σ = 72316415952. Its totient is φ = 42854172288.

The previous prime is 56915697647. The next prime is 56915697749. The reversal of 56915697655 is 55679651965.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 56915697655 - 2³ = 56915697647 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 334798137 + ... + 334798306.

It is an arithmetic number, because the mean of its divisors is an integer number (9039551994).

Almost surely, 2^56915697655 is an apocalyptic number.

56915697655 is a deficient number, since it is larger than the sum of its proper divisors (15400718297).

56915697655 is a wasteful number, since it uses less digits than its factorization.

56915697655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 669596465.

The product of its digits is 76545000, while the sum is 64.

The spelling of 56915697655 in words is "fifty-six billion, nine hundred fifteen million, six hundred ninety-seven thousand, six hundred fifty-five".