56166728384 has 28 divisors (see below), whose sum is σ = 120029380464. Its totient is φ = 25923105024.

The previous prime is 56166728377. The next prime is 56166728399. The reversal of 56166728384 is 48382766165.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33753212 + ... + 33754875.

It is an arithmetic number, because the mean of its divisors is an integer number (4286763588).

Almost surely, 2^56166728384 is an apocalyptic number.

It is an amenable number.

56166728384 is an abundant number, since it is smaller than the sum of its proper divisors (63862652080).

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

56166728384 is a wasteful number, since it uses less digits than its factorization.

56166728384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67508112 (or 67508102 counting only the distinct ones).

The product of its digits is 11612160, while the sum is 56.

The spelling of 56166728384 in words is "fifty-six billion, one hundred sixty-six million, seven hundred twenty-eight thousand, three hundred eighty-four".