17313994909 has 2 divisors, whose sum is σ = 17313994910. Its totient is φ = 17313994908.

The previous prime is 17313994877. The next prime is 17313994927. The reversal of 17313994909 is 90949931371.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8982869284 + 8331125625 = 94778^2 + 91275^2 .

It is a cyclic number.

It is not a de Polignac number, because 17313994909 - 2⁵ = 17313994877 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 17313994909.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (17313994939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8656997454 + 8656997455.

It is an arithmetic number, because the mean of its divisors is an integer number (8656997455).

Almost surely, 2^17313994909 is an apocalyptic number.

It is an amenable number.

17313994909 is a deficient number, since it is larger than the sum of its proper divisors (1).

17313994909 is an equidigital number, since it uses as much as digits as its factorization.

17313994909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1653372, while the sum is 55.

The spelling of 17313994909 in words is "seventeen billion, three hundred thirteen million, nine hundred ninety-four thousand, nine hundred nine".