12515732975 has 24 divisors (see below), whose sum is σ = 15736159488. Its totient is φ = 9873561600.

The previous prime is 12515732963. The next prime is 12515733007. The reversal of 12515732975 is 57923751521.

It is not a de Polignac number, because 12515732975 - 2¹⁸ = 12515470831 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 672242 + ... + 690608.

It is an arithmetic number, because the mean of its divisors is an integer number (655673312).

Almost surely, 2^12515732975 is an apocalyptic number.

12515732975 is a deficient number, since it is larger than the sum of its proper divisors (3220426513).

12515732975 is a wasteful number, since it uses less digits than its factorization.

12515732975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18755 (or 18750 counting only the distinct ones).

The product of its digits is 661500, while the sum is 47.

The spelling of 12515732975 in words is "twelve billion, five hundred fifteen million, seven hundred thirty-two thousand, nine hundred seventy-five".