12644661150 has 72 divisors (see below), whose sum is σ = 37060366824. Its totient is φ = 3065371200.

The previous prime is 12644661137. The next prime is 12644661167. The reversal of 12644661150 is 5116644621.

12644661150 is a `hidden beast` number, since 1 + 2 + 6 + 446 + 61 + 150 = 666.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1272289 + ... + 1282188.

It is an arithmetic number, because the mean of its divisors is an integer number (514727317).

Almost surely, 2^12644661150 is an apocalyptic number.

12644661150 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12644661150 is an abundant number, since it is smaller than the sum of its proper divisors (24415705674).

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

12644661150 is a wasteful number, since it uses less digits than its factorization.

12644661150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2554506 (or 2554498 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The spelling of 12644661150 in words is "twelve billion, six hundred forty-four million, six hundred sixty-one thousand, one hundred fifty".