12657339994 has 8 divisors (see below), whose sum is σ = 20446472340. Its totient is φ = 5841849216.

The previous prime is 12657339943. The next prime is 12657340019. The reversal of 12657339994 is 49993375621.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 12652875225 + 4464769 = 112485^2 + 2113^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 243410359 + ... + 243410410.

Almost surely, 2^12657339994 is an apocalyptic number.

12657339994 is a deficient number, since it is larger than the sum of its proper divisors (7789132346).

12657339994 is a wasteful number, since it uses less digits than its factorization.

12657339994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 486820784.

The product of its digits is 11022480, while the sum is 58.

The spelling of 12657339994 in words is "twelve billion, six hundred fifty-seven million, three hundred thirty-nine thousand, nine hundred ninety-four".