56691174672 has 160 divisors (see below), whose sum is σ = 177787906560. Its totient is φ = 17153009280.

The previous prime is 56691174649. The next prime is 56691174689. The reversal of 56691174672 is 27647119665.

56691174672 is a `hidden beast` number, since 5 + 6 + 69 + 117 + 467 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3236883 + ... + 3254349.

It is an arithmetic number, because the mean of its divisors is an integer number (1111174416).

Almost surely, 2^56691174672 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 56691174672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88893953280).

56691174672 is an abundant number, since it is smaller than the sum of its proper divisors (121096731888).

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

56691174672 is a wasteful number, since it uses less digits than its factorization.

56691174672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18178 (or 18166 counting only the distinct ones).

The product of its digits is 3810240, while the sum is 54.

The spelling of 56691174672 in words is "fifty-six billion, six hundred ninety-one million, one hundred seventy-four thousand, six hundred seventy-two".