172316187880 has 16 divisors (see below), whose sum is σ = 387711422820. Its totient is φ = 68926475136.

The previous prime is 172316187863. The next prime is 172316187919. The reversal of 172316187880 is 88781613271.

172316187880 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 141079867236 + 31236320644 = 375606^2 + 176738^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2153952309 + ... + 2153952388.

Almost surely, 2^172316187880 is an apocalyptic number.

172316187880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

172316187880 is an abundant number, since it is smaller than the sum of its proper divisors (215395234940).

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

172316187880 is a wasteful number, since it uses less digits than its factorization.

172316187880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4307904708 (or 4307904704 counting only the distinct ones).

The product of its (nonzero) digits is 903168, while the sum is 52.

The spelling of 172316187880 in words is "one hundred seventy-two billion, three hundred sixteen million, one hundred eighty-seven thousand, eight hundred eighty".