17118640213 has 2 divisors, whose sum is σ = 17118640214. Its totient is φ = 17118640212.

The previous prime is 17118640199. The next prime is 17118640223. The reversal of 17118640213 is 31204681171.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16292480164 + 826160049 = 127642^2 + 28743^2 .

It is a cyclic number.

It is not a de Polignac number, because 17118640213 - 2²¹ = 17116543061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (17118640223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8559320106 + 8559320107.

It is an arithmetic number, because the mean of its divisors is an integer number (8559320107).

Almost surely, 2^17118640213 is an apocalyptic number.

It is an amenable number.

17118640213 is a deficient number, since it is larger than the sum of its proper divisors (1).

17118640213 is an equidigital number, since it uses as much as digits as its factorization.

17118640213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 34.

The spelling of 17118640213 in words is "seventeen billion, one hundred eighteen million, six hundred forty thousand, two hundred thirteen".