12644299572 has 48 divisors (see below), whose sum is σ = 29693260800. Its totient is φ = 4187725920.

The previous prime is 12644299543. The next prime is 12644299583. The reversal of 12644299572 is 27599244621.

12644299572 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 (51) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1227379 + ... + 1237637.

It is an arithmetic number, because the mean of its divisors is an integer number (618609600).

Almost surely, 2^12644299572 is an apocalyptic number.

12644299572 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12644299572 is an abundant number, since it is smaller than the sum of its proper divisors (17048961228).

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

12644299572 is a wasteful number, since it uses less digits than its factorization.

12644299572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10916 (or 10914 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 51.

The spelling of 12644299572 in words is "twelve billion, six hundred forty-four million, two hundred ninety-nine thousand, five hundred seventy-two".