13268166917 has 2 divisors, whose sum is σ = 13268166918. Its totient is φ = 13268166916.

The previous prime is 13268166893. The next prime is 13268166931. The reversal of 13268166917 is 71966186231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13263898561 + 4268356 = 115169^2 + 2066^2 .

It is an emirp because it is prime and its reverse (71966186231) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13268166917 - 2¹⁶ = 13268101381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13268166937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6634083458 + 6634083459.

It is an arithmetic number, because the mean of its divisors is an integer number (6634083459).

Almost surely, 2^13268166917 is an apocalyptic number.

It is an amenable number.

13268166917 is a deficient number, since it is larger than the sum of its proper divisors (1).

13268166917 is an equidigital number, since it uses as much as digits as its factorization.

13268166917 is an evil number, because the sum of its binary digits is even.

The product of its digits is 653184, while the sum is 50.

The spelling of 13268166917 in words is "thirteen billion, two hundred sixty-eight million, one hundred sixty-six thousand, nine hundred seventeen".