17118644309 has 16 divisors (see below), whose sum is σ = 20368599552. Its totient is φ = 14225680128.

The previous prime is 17118644239. The next prime is 17118644359. The reversal of 17118644309 is 90344681171.

It is a cyclic number.

It is not a de Polignac number, because 17118644309 - 2¹² = 17118640213 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 17118644309.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17118644359) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1678829 + ... + 1688994.

It is an arithmetic number, because the mean of its divisors is an integer number (1273037472).

Almost surely, 2^17118644309 is an apocalyptic number.

It is an amenable number.

17118644309 is a deficient number, since it is larger than the sum of its proper divisors (3249955243).

17118644309 is a wasteful number, since it uses less digits than its factorization.

17118644309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3367876.

The product of its (nonzero) digits is 145152, while the sum is 44.

The spelling of 17118644309 in words is "seventeen billion, one hundred eighteen million, six hundred forty-four thousand, three hundred nine".