56717172140 has 24 divisors (see below), whose sum is σ = 119113364832. Its totient is φ = 22685477760.

The previous prime is 56717172077. The next prime is 56717172143. The reversal of 56717172140 is 4127171765.

It is not an unprimeable number, because it can be changed into a prime (56717172143) 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, 286505 + ... + 442175.

It is an arithmetic number, because the mean of its divisors is an integer number (4963056868).

Almost surely, 2^56717172140 is an apocalyptic number.

It is an amenable number.

56717172140 is an abundant number, since it is smaller than the sum of its proper divisors (62396192692).

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

56717172140 is a wasteful number, since it uses less digits than its factorization.

56717172140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173897 (or 173895 counting only the distinct ones).

The product of its (nonzero) digits is 82320, while the sum is 41.

The spelling of 56717172140 in words is "fifty-six billion, seven hundred seventeen million, one hundred seventy-two thousand, one hundred forty".