12916865539 has 2 divisors, whose sum is σ = 12916865540. Its totient is φ = 12916865538.

The previous prime is 12916865471. The next prime is 12916865597. The reversal of 12916865539 is 93556861921.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12916865539 - 2⁷ = 12916865411 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12916865539.

It is not a weakly prime, because it can be changed into another prime (12916863539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6458432769 + 6458432770.

It is an arithmetic number, because the mean of its divisors is an integer number (6458432770).

Almost surely, 2^12916865539 is an apocalyptic number.

12916865539 is a deficient number, since it is larger than the sum of its proper divisors (1).

12916865539 is an equidigital number, since it uses as much as digits as its factorization.

12916865539 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3499200, while the sum is 55.

The spelling of 12916865539 in words is "twelve billion, nine hundred sixteen million, eight hundred sixty-five thousand, five hundred thirty-nine".