12731344686 has 48 divisors (see below), whose sum is σ = 27984572304. Its totient is φ = 4182337152.

The previous prime is 12731344673. The next prime is 12731344733. The reversal of 12731344686 is 68644313721.

12731344686 is a `hidden beast` number, since 127 + 3 + 1 + 3 + 446 + 86 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2095425 + ... + 2101491.

It is an arithmetic number, because the mean of its divisors is an integer number (583011923).

Almost surely, 2^12731344686 is an apocalyptic number.

12731344686 is an abundant number, since it is smaller than the sum of its proper divisors (15253227618).

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

12731344686 is a wasteful number, since it uses less digits than its factorization.

12731344686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7745 (or 7742 counting only the distinct ones).

The product of its digits is 580608, while the sum is 45.

The spelling of 12731344686 in words is "twelve billion, seven hundred thirty-one million, three hundred forty-four thousand, six hundred eighty-six".