12305686739 has 2 divisors, whose sum is σ = 12305686740. Its totient is φ = 12305686738.

The previous prime is 12305686733. The next prime is 12305686859. The reversal of 12305686739 is 93768650321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12305686739 - 2¹² = 12305682643 is a prime.

It is a super-2 number, since 2×12305686739² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12305686733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6152843369 + 6152843370.

It is an arithmetic number, because the mean of its divisors is an integer number (6152843370).

Almost surely, 2^12305686739 is an apocalyptic number.

12305686739 is a deficient number, since it is larger than the sum of its proper divisors (1).

12305686739 is an equidigital number, since it uses as much as digits as its factorization.

12305686739 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1632960, while the sum is 50.

The spelling of 12305686739 in words is "twelve billion, three hundred five million, six hundred eighty-six thousand, seven hundred thirty-nine".