12864912499 has 2 divisors, whose sum is σ = 12864912500. Its totient is φ = 12864912498.

The previous prime is 12864912493. The next prime is 12864912539. The reversal of 12864912499 is 99421946821.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12864912499 - 2³ = 12864912491 is a prime.

It is not a weakly prime, because it can be changed into another prime (12864912491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6432456249 + 6432456250.

It is an arithmetic number, because the mean of its divisors is an integer number (6432456250).

Almost surely, 2^12864912499 is an apocalyptic number.

12864912499 is a deficient number, since it is larger than the sum of its proper divisors (1).

12864912499 is an equidigital number, since it uses as much as digits as its factorization.

12864912499 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2239488, while the sum is 55.

The spelling of 12864912499 in words is "twelve billion, eight hundred sixty-four million, nine hundred twelve thousand, four hundred ninety-nine".