56791985564 has 24 divisors (see below), whose sum is σ = 99641713248. Its totient is φ = 28323017280.

The previous prime is 56791985557. The next prime is 56791985597. The reversal of 56791985564 is 46558919765.

56791985564 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 56791985564.

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, 2631602 + ... + 2653094.

It is an arithmetic number, because the mean of its divisors is an integer number (4151738052).

Almost surely, 2^56791985564 is an apocalyptic number.

It is an amenable number.

56791985564 is a deficient number, since it is larger than the sum of its proper divisors (42849727684).

56791985564 is a wasteful number, since it uses less digits than its factorization.

56791985564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23165 (or 23163 counting only the distinct ones).

The product of its digits is 81648000, while the sum is 65.

The spelling of 56791985564 in words is "fifty-six billion, seven hundred ninety-one million, nine hundred eighty-five thousand, five hundred sixty-four".