17857173013 has 2 divisors, whose sum is σ = 17857173014. Its totient is φ = 17857173012.

The previous prime is 17857172951. The next prime is 17857173041. The reversal of 17857173013 is 31037175871.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17652311044 + 204861969 = 132862^2 + 14313^2 .

It is a cyclic number.

It is not a de Polignac number, because 17857173013 - 2¹³ = 17857164821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (17857173083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8928586506 + 8928586507.

It is an arithmetic number, because the mean of its divisors is an integer number (8928586507).

Almost surely, 2^17857173013 is an apocalyptic number.

It is an amenable number.

17857173013 is a deficient number, since it is larger than the sum of its proper divisors (1).

17857173013 is an equidigital number, since it uses as much as digits as its factorization.

17857173013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 123480, while the sum is 43.

The spelling of 17857173013 in words is "seventeen billion, eight hundred fifty-seven million, one hundred seventy-three thousand, thirteen".