56690840528 has 20 divisors (see below), whose sum is σ = 125529718560. Its totient is φ = 24296074464.

The previous prime is 56690840509. The next prime is 56690840533. The reversal of 56690840528 is 82504809665.

It is a super-2 number, since 2×56690840528² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 56690840528.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 253083998 + ... + 253084221.

It is an arithmetic number, because the mean of its divisors is an integer number (6276485928).

Almost surely, 2^56690840528 is an apocalyptic number.

It is an amenable number.

56690840528 is an abundant number, since it is smaller than the sum of its proper divisors (68838878032).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56690840528 is a wasteful number, since it uses less digits than its factorization.

56690840528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 506168234 (or 506168228 counting only the distinct ones).

The product of its (nonzero) digits is 4147200, while the sum is 53.

The spelling of 56690840528 in words is "fifty-six billion, six hundred ninety million, eight hundred forty thousand, five hundred twenty-eight".