17138667685 has 8 divisors (see below), whose sum is σ = 21068021016. Its totient is φ = 13376520960.

The previous prime is 17138667677. The next prime is 17138667709. The reversal of 17138667685 is 58676683171.

It can be written as a sum of positive squares in 4 ways, for example, as 1399208836 + 15739458849 = 37406^2 + 125457^2 .

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

It is not a de Polignac number, because 17138667685 - 2³ = 17138667677 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 41801424 + ... + 41801833.

It is an arithmetic number, because the mean of its divisors is an integer number (2633502627).

Almost surely, 2^17138667685 is an apocalyptic number.

It is an amenable number.

17138667685 is a deficient number, since it is larger than the sum of its proper divisors (3929353331).

17138667685 is an equidigital number, since it uses as much as digits as its factorization.

17138667685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83603303.

The product of its digits is 10160640, while the sum is 58.

The spelling of 17138667685 in words is "seventeen billion, one hundred thirty-eight million, six hundred sixty-seven thousand, six hundred eighty-five".