171249431875940 has 96 divisors (see below), whose sum is σ = 403773144606720. Its totient is φ = 60479498979200.

The previous prime is 171249431875939. The next prime is 171249431876021. The reversal of 171249431875940 is 49578134942171.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 78400556 + ... + 80555235.

It is an arithmetic number, because the mean of its divisors is an integer number (4205970256320).

Almost surely, 2^{171249431875940} is an apocalyptic number.

171249431875940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

171249431875940 is an abundant number, since it is smaller than the sum of its proper divisors (232523712730780).

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

171249431875940 is a wasteful number, since it uses less digits than its factorization.

171249431875940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158955953 (or 158955951 counting only the distinct ones).

The product of its (nonzero) digits is 60963840, while the sum is 65.

The spelling of 171249431875940 in words is "one hundred seventy-one trillion, two hundred forty-nine billion, four hundred thirty-one million, eight hundred seventy-five thousand, nine hundred forty".