17112717817 has 8 divisors (see below), whose sum is σ = 18430993224. Its totient is φ = 15794715648.

The previous prime is 17112717763. The next prime is 17112717827. The reversal of 17112717817 is 71871721171.

It can be written as a sum of positive squares in 4 ways, for example, as 205176976 + 16907540841 = 14324^2 + 130029^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 17112717817 - 2¹⁵ = 17112685049 is a prime.

It is a super-2 number, since 2×17112717817² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (17112717827) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72543 + ... + 198715.

It is an arithmetic number, because the mean of its divisors is an integer number (2303874153).

Almost surely, 2^17112717817 is an apocalyptic number.

It is an amenable number.

17112717817 is a deficient number, since it is larger than the sum of its proper divisors (1318275407).

17112717817 is a wasteful number, since it uses less digits than its factorization.

17112717817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136619.

The product of its digits is 38416, while the sum is 43.

The spelling of 17112717817 in words is "seventeen billion, one hundred twelve million, seven hundred seventeen thousand, eight hundred seventeen".