12394512279 has 12 divisors (see below), whose sum is σ = 17946962800. Its totient is φ = 8242802784.

The previous prime is 12394512227. The next prime is 12394512283. The reversal of 12394512279 is 97221549321.

12394512279 is a `hidden beast` number, since 1 + 23 + 94 + 512 + 27 + 9 = 666.

It is not a de Polignac number, because 12394512279 - 2⁸ = 12394512023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12394516279) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1679899 + ... + 1687260.

Almost surely, 2^12394512279 is an apocalyptic number.

12394512279 is a deficient number, since it is larger than the sum of its proper divisors (5552450521).

12394512279 is a wasteful number, since it uses less digits than its factorization.

12394512279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3367574 (or 3367571 counting only the distinct ones).

The product of its digits is 272160, while the sum is 45.

The spelling of 12394512279 in words is "twelve billion, three hundred ninety-four million, five hundred twelve thousand, two hundred seventy-nine".