12667139108 has 36 divisors (see below), whose sum is σ = 25195309020. Its totient is φ = 5538659904.

The previous prime is 12667139087. The next prime is 12667139113. The reversal of 12667139108 is 80193176621.

It can be written as a sum of positive squares in 2 ways, for example, as 5054925604 + 7612213504 = 71098^2 + 87248^2 .

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, 318623 + ... + 356166.

It is an arithmetic number, because the mean of its divisors is an integer number (699869695).

Almost surely, 2^12667139108 is an apocalyptic number.

It is an amenable number.

12667139108 is a deficient number, since it is larger than the sum of its proper divisors (12528169912).

12667139108 is a wasteful number, since it uses less digits than its factorization.

12667139108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 674844 (or 674823 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 44.

The spelling of 12667139108 in words is "twelve billion, six hundred sixty-seven million, one hundred thirty-nine thousand, one hundred eight".