12172324160 has 112 divisors (see below), whose sum is σ = 30967314240. Its totient is φ = 4543672320.

The previous prime is 12172324159. The next prime is 12172324163. The reversal of 12172324160 is 6142327121.

It is a super-2 number, since 2×12172324160² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12172324163) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 392420 + ... + 422300.

Almost surely, 2^12172324160 is an apocalyptic number.

12172324160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12172324160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15483657120).

12172324160 is an abundant number, since it is smaller than the sum of its proper divisors (18794990080).

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

12172324160 is a wasteful number, since it uses less digits than its factorization.

12172324160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29984 (or 29974 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 29.

The spelling of 12172324160 in words is "twelve billion, one hundred seventy-two million, three hundred twenty-four thousand, one hundred sixty".