16872910898717 has 2 divisors, whose sum is σ = 16872910898718. Its totient is φ = 16872910898716.

The previous prime is 16872910898681. The next prime is 16872910898719. The reversal of 16872910898717 is 71789801927861.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14238087208921 + 2634823689796 = 3773339^2 + 1623214^2 .

It is an emirp because it is prime and its reverse (71789801927861) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16872910898717 - 2⁴² = 12474864387613 is a prime.

Together with 16872910898719, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16872910898719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8436455449358 + 8436455449359.

It is an arithmetic number, because the mean of its divisors is an integer number (8436455449359).

Almost surely, 2^{16872910898717} is an apocalyptic number.

It is an amenable number.

16872910898717 is a deficient number, since it is larger than the sum of its proper divisors (1).

16872910898717 is an equidigital number, since it uses as much as digits as its factorization.

16872910898717 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 170698752, while the sum is 74.

The spelling of 16872910898717 in words is "sixteen trillion, eight hundred seventy-two billion, nine hundred ten million, eight hundred ninety-eight thousand, seven hundred seventeen".