12867568658 has 24 divisors (see below), whose sum is σ = 23000225724. Its totient is φ = 5380166400.

The previous prime is 12867568639. The next prime is 12867568687. The reversal of 12867568658 is 85686576821.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 12323886169 + 543682489 = 111013^2 + 23317^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12867568658.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1597223 + ... + 1605258.

Almost surely, 2^12867568658 is an apocalyptic number.

12867568658 is a deficient number, since it is larger than the sum of its proper divisors (10132657066).

12867568658 is a wasteful number, since it uses less digits than its factorization.

12867568658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3202538 (or 3202531 counting only the distinct ones).

The product of its digits is 38707200, while the sum is 62.

The spelling of 12867568658 in words is "twelve billion, eight hundred sixty-seven million, five hundred sixty-eight thousand, six hundred fifty-eight".