12910512987 has 24 divisors (see below), whose sum is σ = 19407155040. Its totient is φ = 8260425600.

The previous prime is 12910512949. The next prime is 12910513013. The reversal of 12910512987 is 78921501921.

12910512987 is a `hidden beast` number, since 129 + 1 + 0 + 512 + 9 + 8 + 7 = 666.

It is not a de Polignac number, because 12910512987 - 2⁸ = 12910512731 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12910512907) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 104514 + ... + 191687.

It is an arithmetic number, because the mean of its divisors is an integer number (808631460).

Almost surely, 2^12910512987 is an apocalyptic number.

12910512987 is a deficient number, since it is larger than the sum of its proper divisors (6496642053).

12910512987 is a wasteful number, since it uses less digits than its factorization.

12910512987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296403 (or 296400 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 45.

The spelling of 12910512987 in words is "twelve billion, nine hundred ten million, five hundred twelve thousand, nine hundred eighty-seven".