12172517124 has 72 divisors (see below), whose sum is σ = 30085040160. Its totient is φ = 3829984128.

The previous prime is 12172517081. The next prime is 12172517167. The reversal of 12172517124 is 42171527121.

12172517124 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12172517081) and next prime (12172517167).

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 23 ways as a sum of consecutive naturals, for example, 1220992 + ... + 1230920.

It is an arithmetic number, because the mean of its divisors is an integer number (417847780).

Almost surely, 2^12172517124 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 12172517124, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15042520080).

12172517124 is an abundant number, since it is smaller than the sum of its proper divisors (17912523036).

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

12172517124 is a wasteful number, since it uses less digits than its factorization.

12172517124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10257 (or 10236 counting only the distinct ones).

The product of its digits is 7840, while the sum is 33.

The spelling of 12172517124 in words is "twelve billion, one hundred seventy-two million, five hundred seventeen thousand, one hundred twenty-four".