12686857142992 has 10 divisors (see below), whose sum is σ = 24580785714578. Its totient is φ = 6343428571488.

The previous prime is 12686857142989. The next prime is 12686857143001. The reversal of 12686857142992 is 29924175868621.

It can be written as a sum of positive squares in only one way, i.e., 12653927959696 + 32929183296 = 3557236^2 + 181464^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 396464285703 + ... + 396464285734.

Almost surely, 2^{12686857142992} is an apocalyptic number.

It is an amenable number.

12686857142992 is a deficient number, since it is larger than the sum of its proper divisors (11893928571586).

12686857142992 is an equidigital number, since it uses as much as digits as its factorization.

12686857142992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 792928571445 (or 792928571439 counting only the distinct ones).

The product of its digits is 209018880, while the sum is 70.

The spelling of 12686857142992 in words is "twelve trillion, six hundred eighty-six billion, eight hundred fifty-seven million, one hundred forty-two thousand, nine hundred ninety-two".