12515162643 has 24 divisors (see below), whose sum is σ = 18578980368. Its totient is φ = 8112284352.

The previous prime is 12515162641. The next prime is 12515162689. The reversal of 12515162643 is 34626151521.

12515162643 is a `hidden beast` number, since 1 + 2 + 5 + 1 + 5 + 1 + 6 + 2 + 643 = 666.

It is not a de Polignac number, because 12515162643 - 2¹ = 12515162641 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12515162598 and 12515162607.

It is not an unprimeable number, because it can be changed into a prime (12515162641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 494821 + ... + 519497.

It is an arithmetic number, because the mean of its divisors is an integer number (774124182).

Almost surely, 2^12515162643 is an apocalyptic number.

12515162643 is a deficient number, since it is larger than the sum of its proper divisors (6063817725).

12515162643 is a wasteful number, since it uses less digits than its factorization.

12515162643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26243 (or 26240 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

The spelling of 12515162643 in words is "twelve billion, five hundred fifteen million, one hundred sixty-two thousand, six hundred forty-three".