56871445136 has 20 divisors (see below), whose sum is σ = 120205554864. Its totient is φ = 25850656800.

The previous prime is 56871445067. The next prime is 56871445171. The reversal of 56871445136 is 63154417865.

56871445136 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×56871445136² (a number of 22 digits) contains 22 as substring.

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, 161566430 + ... + 161566781.

Almost surely, 2^56871445136 is an apocalyptic number.

It is an amenable number.

56871445136 is an abundant number, since it is smaller than the sum of its proper divisors (63334109728).

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

56871445136 is a wasteful number, since it uses less digits than its factorization.

56871445136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323133230 (or 323133224 counting only the distinct ones).

The product of its digits is 2419200, while the sum is 50.

The spelling of 56871445136 in words is "fifty-six billion, eight hundred seventy-one million, four hundred forty-five thousand, one hundred thirty-six".