56656657884 has 24 divisors (see below), whose sum is σ = 132361898368. Its totient is φ = 18862262640.

The previous prime is 56656657861. The next prime is 56656657903. The reversal of 56656657884 is 48875665665.

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, 2901112 + ... + 2920575.

Almost surely, 2^56656657884 is an apocalyptic number.

It is an amenable number.

56656657884 is an abundant number, since it is smaller than the sum of its proper divisors (75705240484).

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

56656657884 is a wasteful number, since it uses less digits than its factorization.

56656657884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5822505 (or 5822503 counting only the distinct ones).

The product of its digits is 290304000, while the sum is 66.

The spelling of 56656657884 in words is "fifty-six billion, six hundred fifty-six million, six hundred fifty-seven thousand, eight hundred eighty-four".