172552257816756 has 24 divisors (see below), whose sum is σ = 413503608823200. Its totient is φ = 55962894426912.

The previous prime is 172552257816737. The next prime is 172552257816761. The reversal of 172552257816756 is 657618752255271.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 194315605206 + ... + 194315606093.

It is an arithmetic number, because the mean of its divisors is an integer number (17229317034300).

Almost surely, 2^{172552257816756} is an apocalyptic number.

It is an amenable number.

172552257816756 is an abundant number, since it is smaller than the sum of its proper divisors (240951351006444).

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

172552257816756 is a wasteful number, since it uses less digits than its factorization.

172552257816756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388631211343 (or 388631211341 counting only the distinct ones).

The product of its digits is 493920000, while the sum is 69.

The spelling of 172552257816756 in words is "one hundred seventy-two trillion, five hundred fifty-two billion, two hundred fifty-seven million, eight hundred sixteen thousand, seven hundred fifty-six".