12739931028 has 36 divisors (see below), whose sum is σ = 35131326048. Its totient is φ = 3860585040.

The previous prime is 12739931011. The next prime is 12739931033. The reversal of 12739931028 is 82013993721.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16085376 + ... + 16086167.

It is an arithmetic number, because the mean of its divisors is an integer number (975870168).

Almost surely, 2^12739931028 is an apocalyptic number.

12739931028 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

12739931028 is an abundant number, since it is smaller than the sum of its proper divisors (22391395020).

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

12739931028 is a wasteful number, since it uses less digits than its factorization.

12739931028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32171564 (or 32171559 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 45.

The spelling of 12739931028 in words is "twelve billion, seven hundred thirty-nine million, nine hundred thirty-one thousand, twenty-eight".