56381458164 has 24 divisors (see below), whose sum is σ = 131684118720. Its totient is φ = 18775621824.

The previous prime is 56381458153. The next prime is 56381458169. The reversal of 56381458164 is 46185418365.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56381458169) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2261784 + ... + 2286575.

It is an arithmetic number, because the mean of its divisors is an integer number (5486838280).

Almost surely, 2^56381458164 is an apocalyptic number.

It is an amenable number.

56381458164 is an abundant number, since it is smaller than the sum of its proper divisors (75302660556).

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

56381458164 is a wasteful number, since it uses less digits than its factorization.

56381458164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4549399 (or 4549397 counting only the distinct ones).

The product of its digits is 2764800, while the sum is 51.

The spelling of 56381458164 in words is "fifty-six billion, three hundred eighty-one million, four hundred fifty-eight thousand, one hundred sixty-four".