12549673668 has 48 divisors (see below), whose sum is σ = 34244080640. Its totient is φ = 3502233504.

The previous prime is 12549673627. The next prime is 12549673681. The reversal of 12549673668 is 86637694521.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1733608 + ... + 1740831.

Almost surely, 2^12549673668 is an apocalyptic number.

It is an amenable number.

12549673668 is an abundant number, since it is smaller than the sum of its proper divisors (21694406972).

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

12549673668 is a wasteful number, since it uses less digits than its factorization.

12549673668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3474496 (or 3474494 counting only the distinct ones).

The product of its digits is 13063680, while the sum is 57.

The spelling of 12549673668 in words is "twelve billion, five hundred forty-nine million, six hundred seventy-three thousand, six hundred sixty-eight".