56649388338 has 16 divisors (see below), whose sum is σ = 125887529760. Its totient is φ = 18883129428.

The previous prime is 56649388319. The next prime is 56649388343. The reversal of 56649388338 is 83388394665.

56649388338 is a `hidden beast` number, since 5 + 66 + 493 + 8 + 83 + 3 + 8 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 524531320 + ... + 524531427.

It is an arithmetic number, because the mean of its divisors is an integer number (7867970610).

Almost surely, 2^56649388338 is an apocalyptic number.

56649388338 is an abundant number, since it is smaller than the sum of its proper divisors (69238141422).

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

56649388338 is a wasteful number, since it uses less digits than its factorization.

56649388338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1049062758 (or 1049062752 counting only the distinct ones).

The product of its digits is 89579520, while the sum is 63.

The spelling of 56649388338 in words is "fifty-six billion, six hundred forty-nine million, three hundred eighty-eight thousand, three hundred thirty-eight".