12695469539 has 2 divisors, whose sum is σ = 12695469540. Its totient is φ = 12695469538.

The previous prime is 12695469481. The next prime is 12695469581. The reversal of 12695469539 is 93596459621.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12695469539 is a prime.

It is a super-2 number, since 2×12695469539² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12695469599) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6347734769 + 6347734770.

It is an arithmetic number, because the mean of its divisors is an integer number (6347734770).

Almost surely, 2^12695469539 is an apocalyptic number.

12695469539 is a deficient number, since it is larger than the sum of its proper divisors (1).

12695469539 is an equidigital number, since it uses as much as digits as its factorization.

12695469539 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15746400, while the sum is 59.

The spelling of 12695469539 in words is "twelve billion, six hundred ninety-five million, four hundred sixty-nine thousand, five hundred thirty-nine".