56577368564 has 12 divisors (see below), whose sum is σ = 99175692000. Its totient is φ = 28241456568.

The previous prime is 56577368539. The next prime is 56577368591. The reversal of 56577368564 is 46586377565.

It is a junction number, because it is equal to n+sod(n) for n = 56577368497 and 56577368506.

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, 11804234 + ... + 11809025.

It is an arithmetic number, because the mean of its divisors is an integer number (8264641000).

Almost surely, 2^56577368564 is an apocalyptic number.

It is an amenable number.

56577368564 is a deficient number, since it is larger than the sum of its proper divisors (42598323436).

56577368564 is a wasteful number, since it uses less digits than its factorization.

56577368564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23613862 (or 23613860 counting only the distinct ones).

The product of its digits is 127008000, while the sum is 62.

Subtracting from 56577368564 its reverse (46586377565), we obtain a palindrome (9990990999).

The spelling of 56577368564 in words is "fifty-six billion, five hundred seventy-seven million, three hundred sixty-eight thousand, five hundred sixty-four".