56637865560 has 128 divisors (see below), whose sum is σ = 170676979200. Its totient is φ = 15035750400.

The previous prime is 56637865523. The next prime is 56637865561. The reversal of 56637865560 is 6556873665.

It is a super-2 number, since 2×56637865560² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 56637865560.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56637865561) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 34982431 + ... + 34984049.

It is an arithmetic number, because the mean of its divisors is an integer number (1333413900).

Almost surely, 2^56637865560 is an apocalyptic number.

It is an amenable number.

56637865560 is an abundant number, since it is smaller than the sum of its proper divisors (114039113640).

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

56637865560 is a wasteful number, since it uses less digits than its factorization.

56637865560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2761 (or 2757 counting only the distinct ones).

The product of its (nonzero) digits is 27216000, while the sum is 57.

The spelling of 56637865560 in words is "fifty-six billion, six hundred thirty-seven million, eight hundred sixty-five thousand, five hundred sixty".