12806926599 has 4 divisors (see below), whose sum is σ = 17075902136. Its totient is φ = 8537951064.

The previous prime is 12806926597. The next prime is 12806926603. The reversal of 12806926599 is 99562960821.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 12806926599 - 2¹ = 12806926597 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 (12806926597) 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, 2134487764 + ... + 2134487769.

It is an arithmetic number, because the mean of its divisors is an integer number (4268975534).

Almost surely, 2^12806926599 is an apocalyptic number.

12806926599 is a deficient number, since it is larger than the sum of its proper divisors (4268975537).

12806926599 is an equidigital number, since it uses as much as digits as its factorization.

12806926599 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4268975536.

The product of its (nonzero) digits is 4199040, while the sum is 57.

The spelling of 12806926599 in words is "twelve billion, eight hundred six million, nine hundred twenty-six thousand, five hundred ninety-nine".