12515315520 has 56 divisors (see below), whose sum is σ = 39736129824. Its totient is φ = 3337417216.

The previous prime is 12515315467. The next prime is 12515315521. The reversal of 12515315520 is 2551351521.

12515315520 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12515315521) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 6517434 + ... + 6519353.

Almost surely, 2^12515315520 is an apocalyptic number.

12515315520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12515315520 is an abundant number, since it is smaller than the sum of its proper divisors (27220814304).

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

12515315520 is a wasteful number, since it uses less digits than its factorization.

12515315520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13036807 (or 13036797 counting only the distinct ones).

The product of its (nonzero) digits is 7500, while the sum is 30.

The spelling of 12515315520 in words is "twelve billion, five hundred fifteen million, three hundred fifteen thousand, five hundred twenty".