12158993184 has 96 divisors (see below), whose sum is σ = 34449367680. Its totient is φ = 3732867072.

The previous prime is 12158993179. The next prime is 12158993221. The reversal of 12158993184 is 48139985121.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×12158993184² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 559677 + ... + 580995.

It is an arithmetic number, because the mean of its divisors is an integer number (358847580).

Almost surely, 2^12158993184 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 12158993184, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17224683840).

12158993184 is an abundant number, since it is smaller than the sum of its proper divisors (22290374496).

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

12158993184 is a wasteful number, since it uses less digits than its factorization.

12158993184 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21802 (or 21794 counting only the distinct ones).

The product of its digits is 622080, while the sum is 51.

The spelling of 12158993184 in words is "twelve billion, one hundred fifty-eight million, nine hundred ninety-three thousand, one hundred eighty-four".