13305791897693 has 2 divisors, whose sum is σ = 13305791897694. Its totient is φ = 13305791897692.

The previous prime is 13305791897681. The next prime is 13305791897729. The reversal of 13305791897693 is 39679819750331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9464987616484 + 3840804281209 = 3076522^2 + 1959797^2 .

It is an emirp because it is prime and its reverse (39679819750331) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13305791897693 - 2⁴⁰ = 12206280269917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13305791897603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6652895948846 + 6652895948847.

It is an arithmetic number, because the mean of its divisors is an integer number (6652895948847).

Almost surely, 2^{13305791897693} is an apocalyptic number.

It is an amenable number.

13305791897693 is a deficient number, since it is larger than the sum of its proper divisors (1).

13305791897693 is an equidigital number, since it uses as much as digits as its factorization.

13305791897693 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 231472080, while the sum is 71.

The spelling of 13305791897693 in words is "thirteen trillion, three hundred five billion, seven hundred ninety-one million, eight hundred ninety-seven thousand, six hundred ninety-three".