12644740608 has 80 divisors (see below), whose sum is σ = 33713087760. Its totient is φ = 4211572736.

The previous prime is 12644740601. The next prime is 12644740621. The reversal of 12644740608 is 80604744621.

12644740608 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 12644740608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12644740601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2622616 + ... + 2627432.

It is an arithmetic number, because the mean of its divisors is an integer number (421413597).

Almost surely, 2^12644740608 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12644740608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16856543880).

12644740608 is an abundant number, since it is smaller than the sum of its proper divisors (21068347152).

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

12644740608 is an equidigital number, since it uses as much as digits as its factorization.

12644740608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6547 (or 6531 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 42.

The spelling of 12644740608 in words is "twelve billion, six hundred forty-four million, seven hundred forty thousand, six hundred eight".