12355217239 has 2 divisors, whose sum is σ = 12355217240. Its totient is φ = 12355217238.

The previous prime is 12355217141. The next prime is 12355217263. The reversal of 12355217239 is 93271255321.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12355217239 - 2²⁵ = 12321662807 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12355217839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6177608619 + 6177608620.

It is an arithmetic number, because the mean of its divisors is an integer number (6177608620).

Almost surely, 2^12355217239 is an apocalyptic number.

12355217239 is a deficient number, since it is larger than the sum of its proper divisors (1).

12355217239 is an equidigital number, since it uses as much as digits as its factorization.

12355217239 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 113400, while the sum is 40.

The spelling of 12355217239 in words is "twelve billion, three hundred fifty-five million, two hundred seventeen thousand, two hundred thirty-nine".