12731918412 has 12 divisors (see below), whose sum is σ = 29707809656. Its totient is φ = 4243972800.

The previous prime is 12731918399. The next prime is 12731918431. The reversal of 12731918412 is 21481913721.

12731918412 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 530496589 + ... + 530496612.

Almost surely, 2^12731918412 is an apocalyptic number.

12731918412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12731918412 is an abundant number, since it is smaller than the sum of its proper divisors (16975891244).

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

12731918412 is a wasteful number, since it uses less digits than its factorization.

12731918412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1060993208 (or 1060993206 counting only the distinct ones).

The product of its digits is 24192, while the sum is 39.

The spelling of 12731918412 in words is "twelve billion, seven hundred thirty-one million, nine hundred eighteen thousand, four hundred twelve".