14891697757117 has 2 divisors, whose sum is σ = 14891697757118. Its totient is φ = 14891697757116.

The previous prime is 14891697757109. The next prime is 14891697757207. The reversal of 14891697757117 is 71175779619841.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12823353302841 + 2068344454276 = 3580971^2 + 1438174^2 .

It is a cyclic number.

It is not a de Polignac number, because 14891697757117 - 2³ = 14891697757109 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 14891697757117.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14891697727117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7445848878558 + 7445848878559.

It is an arithmetic number, because the mean of its divisors is an integer number (7445848878559).

Almost surely, 2^{14891697757117} is an apocalyptic number.

It is an amenable number.

14891697757117 is a deficient number, since it is larger than the sum of its proper divisors (1).

14891697757117 is an equidigital number, since it uses as much as digits as its factorization.

14891697757117 is an evil number, because the sum of its binary digits is even.

The product of its digits is 186701760, while the sum is 73.

The spelling of 14891697757117 in words is "fourteen trillion, eight hundred ninety-one billion, six hundred ninety-seven million, seven hundred fifty-seven thousand, one hundred seventeen".