13178354615911 has 2 divisors, whose sum is σ = 13178354615912. Its totient is φ = 13178354615910.

The previous prime is 13178354615893. The next prime is 13178354616017. The reversal of 13178354615911 is 11951645387131.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13178354615911 - 2⁵ = 13178354615879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13178354615611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6589177307955 + 6589177307956.

It is an arithmetic number, because the mean of its divisors is an integer number (6589177307956).

Almost surely, 2^{13178354615911} is an apocalyptic number.

13178354615911 is a deficient number, since it is larger than the sum of its proper divisors (1).

13178354615911 is an equidigital number, since it uses as much as digits as its factorization.

13178354615911 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2721600, while the sum is 55.

The spelling of 13178354615911 in words is "thirteen trillion, one hundred seventy-eight billion, three hundred fifty-four million, six hundred fifteen thousand, nine hundred eleven".