12626331399 has 24 divisors (see below), whose sum is σ = 19900163712. Its totient is φ = 7650735120.

The previous prime is 12626331337. The next prime is 12626331449. The reversal of 12626331399 is 99313362621.

12626331399 is a `hidden beast` number, since 1 + 2 + 6 + 2 + 633 + 1 + 3 + 9 + 9 = 666.

It is not a de Polignac number, because 12626331399 - 2⁸ = 12626331143 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12626531399) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 617904 + ... + 638010.

It is an arithmetic number, because the mean of its divisors is an integer number (829173488).

Almost surely, 2^12626331399 is an apocalyptic number.

12626331399 is a deficient number, since it is larger than the sum of its proper divisors (7273832313).

12626331399 is a wasteful number, since it uses less digits than its factorization.

12626331399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26467 (or 26464 counting only the distinct ones).

The product of its digits is 314928, while the sum is 45.

The spelling of 12626331399 in words is "twelve billion, six hundred twenty-six million, three hundred thirty-one thousand, three hundred ninety-nine".