56615396800 has 84 divisors (see below), whose sum is σ = 139404760560. Its totient is φ = 22630635520.

The previous prime is 56615396759. The next prime is 56615396881. The reversal of 56615396800 is 869351665.

It is a happy number.

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, 2483052 + ... + 2505748.

Almost surely, 2^56615396800 is an apocalyptic number.

56615396800 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56615396800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69702380280).

56615396800 is an abundant number, since it is smaller than the sum of its proper divisors (82789363760).

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

56615396800 is a wasteful number, since it uses less digits than its factorization.

56615396800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24278 (or 24263 counting only the distinct ones).

The product of its (nonzero) digits is 1166400, while the sum is 49.

The spelling of 56615396800 in words is "fifty-six billion, six hundred fifteen million, three hundred ninety-six thousand, eight hundred".