12503121515 has 16 divisors (see below), whose sum is σ = 15038664960. Its totient is φ = 9979251840.

The previous prime is 12503121473. The next prime is 12503121559. The reversal of 12503121515 is 51512130521.

It is not a de Polignac number, because 12503121515 - 2⁸ = 12503121259 is a prime.

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, 7107206 + ... + 7108964.

It is an arithmetic number, because the mean of its divisors is an integer number (939916560).

Almost surely, 2^12503121515 is an apocalyptic number.

12503121515 is a deficient number, since it is larger than the sum of its proper divisors (2535543445).

12503121515 is a wasteful number, since it uses less digits than its factorization.

12503121515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4262.

The product of its (nonzero) digits is 1500, while the sum is 26.

The spelling of 12503121515 in words is "twelve billion, five hundred three million, one hundred twenty-one thousand, five hundred fifteen".