16795317007681 has 9 divisors (see below), whose sum is σ = 17557395899169. Its totient is φ = 16064995672836.

The previous prime is 16795317007663. The next prime is 16795317007691. The reversal of 16795317007681 is 18670071359761.

The square root of 16795317007681 is 4098209.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 16795317007681 - 2²³ = 16795308619073 is a prime.

It is a super-2 number, since 2×16795317007681² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16795317007661) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 94169716 + ... + 94347898.

Almost surely, 2^{16795317007681} is an apocalyptic number.

16795317007681 is the 4098209-th square number.

16795317007681 is the 2049105-th centered octagonal number.

It is an amenable number.

16795317007681 is a deficient number, since it is larger than the sum of its proper divisors (762078891488).

16795317007681 is an frugal number, since it uses more digits than its factorization.

16795317007681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 356412 (or 178206 counting only the distinct ones).

The product of its (nonzero) digits is 13335840, while the sum is 61.

The spelling of 16795317007681 in words is "sixteen trillion, seven hundred ninety-five billion, three hundred seventeen million, seven thousand, six hundred eighty-one".