12889556924 has 24 divisors (see below), whose sum is σ = 23042224128. Its totient is φ = 6306130800.

The previous prime is 12889556923. The next prime is 12889556947. The reversal of 12889556924 is 42965598821.

It is a super-2 number, since 2×12889556924² (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 (12889556923) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1490477 + ... + 1499099.

It is an arithmetic number, because the mean of its divisors is an integer number (960092672).

Almost surely, 2^12889556924 is an apocalyptic number.

It is an amenable number.

12889556924 is a deficient number, since it is larger than the sum of its proper divisors (10152667204).

12889556924 is a wasteful number, since it uses less digits than its factorization.

12889556924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16625 (or 16623 counting only the distinct ones).

The product of its digits is 12441600, while the sum is 59.

The spelling of 12889556924 in words is "twelve billion, eight hundred eighty-nine million, five hundred fifty-six thousand, nine hundred twenty-four".