12712636854 has 24 divisors (see below), whose sum is σ = 28564197480. Its totient is φ = 4237545456.

The previous prime is 12712636759. The next prime is 12712636861. The reversal of 12712636854 is 45863621721.

12712636854 is a `hidden beast` number, since 1 + 2 + 7 + 1 + 2 + 636 + 8 + 5 + 4 = 666.

It is a super-2 number, since 2×12712636854² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13078359 + ... + 13079330.

It is an arithmetic number, because the mean of its divisors is an integer number (1190174895).

Almost surely, 2^12712636854 is an apocalyptic number.

12712636854 is an abundant number, since it is smaller than the sum of its proper divisors (15851560626).

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

12712636854 is an equidigital number, since it uses as much as digits as its factorization.

12712636854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26157706 (or 26157694 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The spelling of 12712636854 in words is "twelve billion, seven hundred twelve million, six hundred thirty-six thousand, eight hundred fifty-four".