12739400920 has 16 divisors (see below), whose sum is σ = 28663652160. Its totient is φ = 5095760352.

The previous prime is 12739400897. The next prime is 12739400939. The reversal of 12739400920 is 2900493721.

It is a self number, because there is not a number n which added to its sum of digits gives 12739400920.

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, 159242472 + ... + 159242551.

It is an arithmetic number, because the mean of its divisors is an integer number (1791478260).

Almost surely, 2^12739400920 is an apocalyptic number.

12739400920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12739400920 is an abundant number, since it is smaller than the sum of its proper divisors (15924251240).

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

12739400920 is a wasteful number, since it uses less digits than its factorization.

12739400920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318485034 (or 318485030 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 37.

The spelling of 12739400920 in words is "twelve billion, seven hundred thirty-nine million, four hundred thousand, nine hundred twenty".