12949667136 has 84 divisors (see below), whose sum is σ = 42420450592. Its totient is φ = 3699903744.

The previous prime is 12949667117. The next prime is 12949667149. The reversal of 12949667136 is 63176694921.

12949667136 is a `hidden beast` number, since 12 + 9 + 496 + 6 + 7 + 136 = 666.

It is a tau number, because it is divible by the number of its divisors (84).

It is a nude number because it is divisible by every one of its digits.

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, 1601830 + ... + 1609893.

Almost surely, 2^12949667136 is an apocalyptic number.

12949667136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12949667136 is an abundant number, since it is smaller than the sum of its proper divisors (29470783456).

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

12949667136 is a wasteful number, since it uses less digits than its factorization.

12949667136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3211748 (or 3211735 counting only the distinct ones).

The product of its digits is 2939328, while the sum is 54.

The spelling of 12949667136 in words is "twelve billion, nine hundred forty-nine million, six hundred sixty-seven thousand, one hundred thirty-six".