56913213844 has 24 divisors (see below), whose sum is σ = 102956134400. Its totient is φ = 27499767840.

The previous prime is 56913213839. The next prime is 56913213901. The reversal of 56913213844 is 44831231965.

It is a happy number.

It is a super-2 number, since 2×56913213844² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 56913213794 and 56913213803.

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, 235764 + ... + 411595.

Almost surely, 2^56913213844 is an apocalyptic number.

It is an amenable number.

56913213844 is a deficient number, since it is larger than the sum of its proper divisors (46042920556).

56913213844 is a wasteful number, since it uses less digits than its factorization.

56913213844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 648103 (or 648101 counting only the distinct ones).

The product of its digits is 622080, while the sum is 46.

The spelling of 56913213844 in words is "fifty-six billion, nine hundred thirteen million, two hundred thirteen thousand, eight hundred forty-four".