12800724432 has 20 divisors (see below), whose sum is σ = 33068538240. Its totient is φ = 4266908128.

The previous prime is 12800724427. The next prime is 12800724487. The reversal of 12800724432 is 23442700821.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 12800724393 and 12800724402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 133340832 + ... + 133340927.

It is an arithmetic number, because the mean of its divisors is an integer number (1653426912).

Almost surely, 2^12800724432 is an apocalyptic number.

12800724432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12800724432 is an abundant number, since it is smaller than the sum of its proper divisors (20267813808).

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

12800724432 is a wasteful number, since it uses less digits than its factorization.

12800724432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266681770 (or 266681764 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 33.

The spelling of 12800724432 in words is "twelve billion, eight hundred million, seven hundred twenty-four thousand, four hundred thirty-two".