12599726869 has 2 divisors, whose sum is σ = 12599726870. Its totient is φ = 12599726868.

The previous prime is 12599726813. The next prime is 12599726897. The reversal of 12599726869 is 96862799521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9941087025 + 2658639844 = 99705^2 + 51562^2 .

It is an emirp because it is prime and its reverse (96862799521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12599726869 - 2²³ = 12591338261 is a prime.

It is a super-2 number, since 2×12599726869² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12599726869.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12599726969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6299863434 + 6299863435.

It is an arithmetic number, because the mean of its divisors is an integer number (6299863435).

Almost surely, 2^12599726869 is an apocalyptic number.

It is an amenable number.

12599726869 is a deficient number, since it is larger than the sum of its proper divisors (1).

12599726869 is an equidigital number, since it uses as much as digits as its factorization.

12599726869 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 29393280, while the sum is 64.

The spelling of 12599726869 in words is "twelve billion, five hundred ninety-nine million, seven hundred twenty-six thousand, eight hundred sixty-nine".