17172513313 has 2 divisors, whose sum is σ = 17172513314. Its totient is φ = 17172513312.

The previous prime is 17172513311. The next prime is 17172513361. The reversal of 17172513313 is 31331527171.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16892720784 + 279792529 = 129972^2 + 16727^2 .

It is a cyclic number.

It is not a de Polignac number, because 17172513313 - 2¹ = 17172513311 is a prime.

Together with 17172513311, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (17172513311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8586256656 + 8586256657.

It is an arithmetic number, because the mean of its divisors is an integer number (8586256657).

Almost surely, 2^17172513313 is an apocalyptic number.

It is an amenable number.

17172513313 is a deficient number, since it is larger than the sum of its proper divisors (1).

17172513313 is an equidigital number, since it uses as much as digits as its factorization.

17172513313 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13230, while the sum is 34.

The spelling of 17172513313 in words is "seventeen billion, one hundred seventy-two million, five hundred thirteen thousand, three hundred thirteen".