12515131772 has 96 divisors (see below), whose sum is σ = 27775802880. Its totient is φ = 4849447680.

The previous prime is 12515131771. The next prime is 12515131819. The reversal of 12515131772 is 27713151521.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12515131771) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 365123 + ... + 397925.

It is an arithmetic number, because the mean of its divisors is an integer number (289331280).

Almost surely, 2^12515131772 is an apocalyptic number.

It is an amenable number.

12515131772 is an abundant number, since it is smaller than the sum of its proper divisors (15260671108).

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

12515131772 is a wasteful number, since it uses less digits than its factorization.

12515131772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32883 (or 32881 counting only the distinct ones).

The product of its digits is 14700, while the sum is 35.

The spelling of 12515131772 in words is "twelve billion, five hundred fifteen million, one hundred thirty-one thousand, seven hundred seventy-two".