32130512172 has 144 divisors (see below), whose sum is σ = 93790569600. Its totient is φ = 9172154880.

The previous prime is 32130512171. The next prime is 32130512179. The reversal of 32130512172 is 27121503123.

32130512172 is a `hidden beast` number, since 3 + 2 + 130 + 512 + 17 + 2 = 666.

It is not an unprimeable number, because it can be changed into a prime (32130512171) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1334868 + ... + 1358724.

It is an arithmetic number, because the mean of its divisors is an integer number (651323400).

Almost surely, 2^32130512172 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 32130512172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46895284800).

32130512172 is an abundant number, since it is smaller than the sum of its proper divisors (61660057428).

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

32130512172 is a wasteful number, since it uses less digits than its factorization.

32130512172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24076 (or 24071 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The spelling of 32130512172 in words is "thirty-two billion, one hundred thirty million, five hundred twelve thousand, one hundred seventy-two".