12759535309 has 2 divisors, whose sum is σ = 12759535310. Its totient is φ = 12759535308.

The previous prime is 12759535307. The next prime is 12759535331. The reversal of 12759535309 is 90353595721.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12275975209 + 483560100 = 110797^2 + 21990^2 .

It is a cyclic number.

It is not a de Polignac number, because 12759535309 - 2¹ = 12759535307 is a prime.

Together with 12759535307, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12759535307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6379767654 + 6379767655.

It is an arithmetic number, because the mean of its divisors is an integer number (6379767655).

Almost surely, 2^12759535309 is an apocalyptic number.

It is an amenable number.

12759535309 is a deficient number, since it is larger than the sum of its proper divisors (1).

12759535309 is an equidigital number, since it uses as much as digits as its factorization.

12759535309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1275750, while the sum is 49.

The spelling of 12759535309 in words is "twelve billion, seven hundred fifty-nine million, five hundred thirty-five thousand, three hundred nine".