17315989613 has 6 divisors (see below), whose sum is σ = 18750450474. Its totient is φ = 15983990256.

The previous prime is 17315989597. The next prime is 17315989627. The reversal of 17315989613 is 31698951371.

It can be written as a sum of positive squares in 3 ways, for example, as 437562724 + 16878426889 = 20918^2 + 129917^2 .

It is not a de Polignac number, because 17315989613 - 2⁴ = 17315989597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17315989643) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 51230570 + ... + 51230907.

It is an arithmetic number, because the mean of its divisors is an integer number (3125075079).

Almost surely, 2^17315989613 is an apocalyptic number.

17315989613 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

17315989613 is a deficient number, since it is larger than the sum of its proper divisors (1434460861).

17315989613 is a wasteful number, since it uses less digits than its factorization.

17315989613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102461503 (or 102461490 counting only the distinct ones).

The product of its digits is 1224720, while the sum is 53.

The spelling of 17315989613 in words is "seventeen billion, three hundred fifteen million, nine hundred eighty-nine thousand, six hundred thirteen".