56816381644 has 24 divisors (see below), whose sum is σ = 114176462400. Its totient is φ = 24466384080.

The previous prime is 56816381627. The next prime is 56816381681. The reversal of 56816381644 is 44618361865.

56816381644 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 56816381591 and 56816381600.

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, 33980254 + ... + 33981925.

It is an arithmetic number, because the mean of its divisors is an integer number (4757352600).

Almost surely, 2^56816381644 is an apocalyptic number.

It is an amenable number.

56816381644 is an abundant number, since it is smaller than the sum of its proper divisors (57360080756).

56816381644 is a wasteful number, since it uses less digits than its factorization.

56816381644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67962213 (or 67962211 counting only the distinct ones).

The product of its digits is 3317760, while the sum is 52.

The spelling of 56816381644 in words is "fifty-six billion, eight hundred sixteen million, three hundred eighty-one thousand, six hundred forty-four".