17345680213 has 2 divisors, whose sum is σ = 17345680214. Its totient is φ = 17345680212.

The previous prime is 17345680199. The next prime is 17345680237. The reversal of 17345680213 is 31208654371.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17345680209 + 4 = 131703^2 + 2^2 .

It is a cyclic number.

It is not a de Polignac number, because 17345680213 - 2⁵ = 17345680181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (17345680243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8672840106 + 8672840107.

It is an arithmetic number, because the mean of its divisors is an integer number (8672840107).

Almost surely, 2^17345680213 is an apocalyptic number.

It is an amenable number.

17345680213 is a deficient number, since it is larger than the sum of its proper divisors (1).

17345680213 is an equidigital number, since it uses as much as digits as its factorization.

17345680213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120960, while the sum is 40.

The spelling of 17345680213 in words is "seventeen billion, three hundred forty-five million, six hundred eighty thousand, two hundred thirteen".