56720213271 has 12 divisors (see below), whose sum is σ = 81984536400. Its totient is φ = 37787934240.

The previous prime is 56720213233. The next prime is 56720213281. The reversal of 56720213271 is 17231202765.

56720213271 is a `hidden beast` number, since 567 + 2 + 0 + 21 + 3 + 2 + 71 = 666.

56720213271 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-56720213271 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56720213281) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2114371 + ... + 2141028.

It is an arithmetic number, because the mean of its divisors is an integer number (6832044700).

Almost surely, 2^56720213271 is an apocalyptic number.

56720213271 is a deficient number, since it is larger than the sum of its proper divisors (25264323129).

56720213271 is a wasteful number, since it uses less digits than its factorization.

56720213271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4256886 (or 4256883 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 36.

The spelling of 56720213271 in words is "fifty-six billion, seven hundred twenty million, two hundred thirteen thousand, two hundred seventy-one".