172131117560 has 32 divisors (see below), whose sum is σ = 387628133040. Its totient is φ = 68793225984.

The previous prime is 172131117523. The next prime is 172131117577. The reversal of 172131117560 is 65711131271.

172131117560 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 172131117560.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1803557 + ... + 1896596.

Almost surely, 2^172131117560 is an apocalyptic number.

172131117560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

172131117560 is an abundant number, since it is smaller than the sum of its proper divisors (215497015480).

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

172131117560 is a wasteful number, since it uses less digits than its factorization.

172131117560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3701327 (or 3701323 counting only the distinct ones).

The product of its (nonzero) digits is 8820, while the sum is 35.

The spelling of 172131117560 in words is "one hundred seventy-two billion, one hundred thirty-one million, one hundred seventeen thousand, five hundred sixty".