13099879717 has 2 divisors, whose sum is σ = 13099879718. Its totient is φ = 13099879716.

The previous prime is 13099879657. The next prime is 13099879729. The reversal of 13099879717 is 71797899031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12383460961 + 716418756 = 111281^2 + 26766^2 .

It is a cyclic number.

It is not a de Polignac number, because 13099879717 - 2⁷ = 13099879589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13099879757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6549939858 + 6549939859.

It is an arithmetic number, because the mean of its divisors is an integer number (6549939859).

Almost surely, 2^13099879717 is an apocalyptic number.

It is an amenable number.

13099879717 is a deficient number, since it is larger than the sum of its proper divisors (1).

13099879717 is an equidigital number, since it uses as much as digits as its factorization.

13099879717 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6001128, while the sum is 61.

The spelling of 13099879717 in words is "thirteen billion, ninety-nine million, eight hundred seventy-nine thousand, seven hundred seventeen".