12731263474 has 8 divisors (see below), whose sum is σ = 19613027628. Its totient is φ = 6193587600.

The previous prime is 12731263421. The next prime is 12731263477. The reversal of 12731263474 is 47436213721.

It can be written as a sum of positive squares in 2 ways, for example, as 12419988025 + 311275449 = 111445^2 + 17643^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (12731263477) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86021977 + ... + 86022124.

Almost surely, 2^12731263474 is an apocalyptic number.

12731263474 is a deficient number, since it is larger than the sum of its proper divisors (6881764154).

12731263474 is a wasteful number, since it uses less digits than its factorization.

12731263474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172044140.

The product of its digits is 169344, while the sum is 40.

The spelling of 12731263474 in words is "twelve billion, seven hundred thirty-one million, two hundred sixty-three thousand, four hundred seventy-four".