56518637700 has 72 divisors (see below), whose sum is σ = 186888302272. Its totient is φ = 12918545280.

The previous prime is 56518637683. The next prime is 56518637743. The reversal of 56518637700 is 773681565.

It is a super-2 number, since 2×56518637700² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 56518637700.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13454719 + ... + 13458918.

Almost surely, 2^56518637700 is an apocalyptic number.

56518637700 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

56518637700 is an abundant number, since it is smaller than the sum of its proper divisors (130369664572).

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

56518637700 is a wasteful number, since it uses less digits than its factorization.

56518637700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26913661 (or 26913654 counting only the distinct ones).

The product of its (nonzero) digits is 1058400, while the sum is 48.

The spelling of 56518637700 in words is "fifty-six billion, five hundred eighteen million, six hundred thirty-seven thousand, seven hundred".