12644587324 has 12 divisors (see below), whose sum is σ = 23292661000. Its totient is φ = 5989541328.

The previous prime is 12644587321. The next prime is 12644587349. The reversal of 12644587324 is 42378544621.

It is a super-2 number, since 2×12644587324² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12644587321) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 83187999 + ... + 83188150.

Almost surely, 2^12644587324 is an apocalyptic number.

It is an amenable number.

12644587324 is a deficient number, since it is larger than the sum of its proper divisors (10648073676).

12644587324 is a wasteful number, since it uses less digits than its factorization.

12644587324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166376172 (or 166376170 counting only the distinct ones).

The product of its digits is 1290240, while the sum is 46.

The spelling of 12644587324 in words is "twelve billion, six hundred forty-four million, five hundred eighty-seven thousand, three hundred twenty-four".