12156615824 has 80 divisors (see below), whose sum is σ = 24585301440. Its totient is φ = 5819450880.

The previous prime is 12156615803. The next prime is 12156615841. The reversal of 12156615824 is 42851665121.

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, 6160502 + ... + 6162474.

It is an arithmetic number, because the mean of its divisors is an integer number (307316268).

Almost surely, 2^12156615824 is an apocalyptic number.

It is an amenable number.

12156615824 is an abundant number, since it is smaller than the sum of its proper divisors (12428685616).

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

12156615824 is a wasteful number, since it uses less digits than its factorization.

12156615824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2208 (or 2202 counting only the distinct ones).

The product of its digits is 115200, while the sum is 41.

The spelling of 12156615824 in words is "twelve billion, one hundred fifty-six million, six hundred fifteen thousand, eight hundred twenty-four".