12609845568 has 84 divisors (see below), whose sum is σ = 36481816800. Its totient is φ = 4163978496.

The previous prime is 12609845543. The next prime is 12609845581. The reversal of 12609845568 is 86554890621.

12609845568 is a `hidden beast` number, since 1 + 2 + 6 + 0 + 9 + 84 + 556 + 8 = 666.

It is a congruent number.

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, 40668 + ... + 163931.

Almost surely, 2^12609845568 is an apocalyptic number.

12609845568 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

12609845568 is an abundant number, since it is smaller than the sum of its proper divisors (23871971232).

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

12609845568 is a wasteful number, since it uses less digits than its factorization.

12609845568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204724 (or 204711 counting only the distinct ones).

The product of its (nonzero) digits is 4147200, while the sum is 54.

The spelling of 12609845568 in words is "twelve billion, six hundred nine million, eight hundred forty-five thousand, five hundred sixty-eight".