16564703317297 has 2 divisors, whose sum is σ = 16564703317298. Its totient is φ = 16564703317296.

The previous prime is 16564703317247. The next prime is 16564703317301. The reversal of 16564703317297 is 79271330746561.

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., 15313204677681 + 1251498639616 = 3913209^2 + 1118704^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16564703317297 is a prime.

It is not a weakly prime, because it can be changed into another prime (16564703317247) 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, 8282351658648 + 8282351658649.

It is an arithmetic number, because the mean of its divisors is an integer number (8282351658649).

Almost surely, 2^{16564703317297} is an apocalyptic number.

It is an amenable number.

16564703317297 is a deficient number, since it is larger than the sum of its proper divisors (1).

16564703317297 is an equidigital number, since it uses as much as digits as its factorization.

16564703317297 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40007520, while the sum is 61.

The spelling of 16564703317297 in words is "sixteen trillion, five hundred sixty-four billion, seven hundred three million, three hundred seventeen thousand, two hundred ninety-seven".