56577742686 has 24 divisors (see below), whose sum is σ = 123962473440. Its totient is φ = 18647345376.

The previous prime is 56577742679. The next prime is 56577742691. The reversal of 56577742686 is 68624777565.

56577742686 is a `hidden beast` number, since 5 + 65 + 7 + 77 + 426 + 86 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17656870 + ... + 17660073.

It is an arithmetic number, because the mean of its divisors is an integer number (5165103060).

Almost surely, 2^56577742686 is an apocalyptic number.

56577742686 is an abundant number, since it is smaller than the sum of its proper divisors (67384730754).

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

56577742686 is a wasteful number, since it uses less digits than its factorization.

56577742686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35317040 (or 35317037 counting only the distinct ones).

The product of its digits is 118540800, while the sum is 63.

The spelling of 56577742686 in words is "fifty-six billion, five hundred seventy-seven million, seven hundred forty-two thousand, six hundred eighty-six".