12515916288 has 80 divisors (see below), whose sum is σ = 33430494240. Its totient is φ = 4161048576.

The previous prime is 12515916241. The next prime is 12515916311. The reversal of 12515916288 is 88261951521.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 587031 + ... + 607977.

It is an arithmetic number, because the mean of its divisors is an integer number (417881178).

Almost surely, 2^12515916288 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 12515916288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16715247120).

12515916288 is an abundant number, since it is smaller than the sum of its proper divisors (20914577952).

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

12515916288 is an equidigital number, since it uses as much as digits as its factorization.

12515916288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21357 (or 21341 counting only the distinct ones).

The product of its digits is 345600, while the sum is 48.

The spelling of 12515916288 in words is "twelve billion, five hundred fifteen million, nine hundred sixteen thousand, two hundred eighty-eight".