12538593564518 has 12 divisors (see below), whose sum is σ = 21878566321932. Its totient is φ = 5373682956180.

The previous prime is 12538593564509. The next prime is 12538593564527. The reversal of 12538593564518 is 81546539583521.

It is an interprime number because it is at equal distance from previous prime (12538593564509) and next prime (12538593564527).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 63972416048 + ... + 63972416243.

It is an arithmetic number, because the mean of its divisors is an integer number (1823213860161).

Almost surely, 2^{12538593564518} is an apocalyptic number.

12538593564518 is a deficient number, since it is larger than the sum of its proper divisors (9339972757414).

12538593564518 is a wasteful number, since it uses less digits than its factorization.

12538593564518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127944832307 (or 127944832300 counting only the distinct ones).

The product of its digits is 155520000, while the sum is 65.

The spelling of 12538593564518 in words is "twelve trillion, five hundred thirty-eight billion, five hundred ninety-three million, five hundred sixty-four thousand, five hundred eighteen".