56717172156 has 48 divisors (see below), whose sum is σ = 139421999360. Its totient is φ = 17895686400.

The previous prime is 56717172143. The next prime is 56717172157. The reversal of 56717172156 is 65127171765.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56717172157) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 170265 + ... + 377391.

Almost surely, 2^56717172156 is an apocalyptic number.

It is an amenable number.

56717172156 is an abundant number, since it is smaller than the sum of its proper divisors (82704827204).

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

56717172156 is a wasteful number, since it uses less digits than its factorization.

56717172156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208354 (or 208352 counting only the distinct ones).

The product of its digits is 617400, while the sum is 48.

The spelling of 56717172156 in words is "fifty-six billion, seven hundred seventeen million, one hundred seventy-two thousand, one hundred fifty-six".