12705839099 has 2 divisors, whose sum is σ = 12705839100. Its totient is φ = 12705839098.

The previous prime is 12705839077. The next prime is 12705839119. The reversal of 12705839099 is 99093850721.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12705839099 - 2²⁴ = 12689061883 is a prime.

It is a super-2 number, since 2×12705839099² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12705839099.

It is not a weakly prime, because it can be changed into another prime (12705809099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6352919549 + 6352919550.

It is an arithmetic number, because the mean of its divisors is an integer number (6352919550).

Almost surely, 2^12705839099 is an apocalyptic number.

12705839099 is a deficient number, since it is larger than the sum of its proper divisors (1).

12705839099 is an equidigital number, since it uses as much as digits as its factorization.

12705839099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1224720, while the sum is 53.

The spelling of 12705839099 in words is "twelve billion, seven hundred five million, eight hundred thirty-nine thousand, ninety-nine".