12886666826 has 16 divisors (see below), whose sum is σ = 22004111808. Its totient is φ = 5602898400.

The previous prime is 12886666817. The next prime is 12886666831. The reversal of 12886666826 is 62866668821.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12733355 + ... + 12734366.

It is an arithmetic number, because the mean of its divisors is an integer number (1375256988).

Almost surely, 2^12886666826 is an apocalyptic number.

12886666826 is a deficient number, since it is larger than the sum of its proper divisors (9117444982).

12886666826 is a wasteful number, since it uses less digits than its factorization.

12886666826 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25467757.

The product of its digits is 15925248, while the sum is 59.

The spelling of 12886666826 in words is "twelve billion, eight hundred eighty-six million, six hundred sixty-six thousand, eight hundred twenty-six".