12289908432 has 40 divisors (see below), whose sum is σ = 32487282784. Its totient is φ = 4001364864.

The previous prime is 12289908401. The next prime is 12289908461. The reversal of 12289908432 is 23480998221.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2975143 + ... + 2979270.

Almost surely, 2^12289908432 is an apocalyptic number.

12289908432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12289908432 is an abundant number, since it is smaller than the sum of its proper divisors (20197374352).

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

12289908432 is a wasteful number, since it uses less digits than its factorization.

12289908432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5954467 (or 5954461 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 48.

The spelling of 12289908432 in words is "twelve billion, two hundred eighty-nine million, nine hundred eight thousand, four hundred thirty-two".