17138181689 has 4 divisors (see below), whose sum is σ = 17143125540. Its totient is φ = 17133237840.

The previous prime is 17138181607. The next prime is 17138181721. The reversal of 17138181689 is 98618183171.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 98618183171 = 47681 ⋅2068291.

It can be written as a sum of positive squares in 2 ways, for example, as 3553113664 + 13585068025 = 59608^2 + 116555^2 .

It is a cyclic number.

It is not a de Polignac number, because 17138181689 - 2²⁴ = 17121404473 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 17138181689.

It is not an unprimeable number, because it can be changed into a prime (17138184689) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2466722 + ... + 2473659.

It is an arithmetic number, because the mean of its divisors is an integer number (4285781385).

Almost surely, 2^17138181689 is an apocalyptic number.

It is an amenable number.

17138181689 is a deficient number, since it is larger than the sum of its proper divisors (4943851).

17138181689 is an equidigital number, since it uses as much as digits as its factorization.

17138181689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4943850.

The product of its digits is 580608, while the sum is 53.

The spelling of 17138181689 in words is "seventeen billion, one hundred thirty-eight million, one hundred eighty-one thousand, six hundred eighty-nine".