56864636864 has 28 divisors (see below), whose sum is σ = 128960873904. Its totient is φ = 24370558464.

The previous prime is 56864636833. The next prime is 56864636903. The reversal of 56864636864 is 46863646865.

It is a tau number, because it is divible by the number of its divisors (28).

It is a junction number, because it is equal to n+sod(n) for n = 56864636797 and 56864636806.

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, 63464549 + ... + 63465444.

Almost surely, 2^56864636864 is an apocalyptic number.

It is an amenable number.

56864636864 is an abundant number, since it is smaller than the sum of its proper divisors (72096237040).

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

56864636864 is a wasteful number, since it uses less digits than its factorization.

56864636864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126930012 (or 126930002 counting only the distinct ones).

The product of its digits is 119439360, while the sum is 62.

The spelling of 56864636864 in words is "fifty-six billion, eight hundred sixty-four million, six hundred thirty-six thousand, eight hundred sixty-four".