56631803376 has 80 divisors (see below), whose sum is σ = 149679303840. Its totient is φ = 18444042240.

The previous prime is 56631803363. The next prime is 56631803381. The reversal of 56631803376 is 67330813665.

It is a super-2 number, since 2×56631803376² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 566920 + ... + 659288.

It is an arithmetic number, because the mean of its divisors is an integer number (1870991298).

Almost surely, 2^56631803376 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56631803376, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74839651920).

56631803376 is an abundant number, since it is smaller than the sum of its proper divisors (93047500464).

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

56631803376 is a wasteful number, since it uses less digits than its factorization.

56631803376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92674 (or 92668 counting only the distinct ones).

The product of its (nonzero) digits is 1632960, while the sum is 48.

The spelling of 56631803376 in words is "fifty-six billion, six hundred thirty-one million, eight hundred three thousand, three hundred seventy-six".