13173116909 has 2 divisors, whose sum is σ = 13173116910. Its totient is φ = 13173116908.

The previous prime is 13173116903. The next prime is 13173116923. The reversal of 13173116909 is 90961137131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11577114409 + 1596002500 = 107597^2 + 39950^2 .

It is a cyclic number.

It is not a de Polignac number, because 13173116909 - 2¹⁶ = 13173051373 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13173116903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6586558454 + 6586558455.

It is an arithmetic number, because the mean of its divisors is an integer number (6586558455).

Almost surely, 2^13173116909 is an apocalyptic number.

It is an amenable number.

13173116909 is a deficient number, since it is larger than the sum of its proper divisors (1).

13173116909 is an equidigital number, since it uses as much as digits as its factorization.

13173116909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30618, while the sum is 41.

The spelling of 13173116909 in words is "thirteen billion, one hundred seventy-three million, one hundred sixteen thousand, nine hundred nine".