12731767726404 has 24 divisors (see below), whose sum is σ = 29708148615040. Its totient is φ = 4243823920224.

The previous prime is 12731767726393. The next prime is 12731767726429. The reversal of 12731767726404 is 40462776713721.

It is a happy number.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11793244 + ... + 12827475.

Almost surely, 2^{12731767726404} is an apocalyptic number.

It is an amenable number.

12731767726404 is an abundant number, since it is smaller than the sum of its proper divisors (16976380888636).

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

12731767726404 is a wasteful number, since it uses less digits than its factorization.

12731767726404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24663819 (or 24663817 counting only the distinct ones).

The product of its (nonzero) digits is 16595712, while the sum is 57.

The spelling of 12731767726404 in words is "twelve trillion, seven hundred thirty-one billion, seven hundred sixty-seven million, seven hundred twenty-six thousand, four hundred four".