13638334399 has 2 divisors, whose sum is σ = 13638334400. Its totient is φ = 13638334398.

The previous prime is 13638334379. The next prime is 13638334417. The reversal of 13638334399 is 99343383631.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13638334399 - 2⁹ = 13638333887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13638334309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6819167199 + 6819167200.

It is an arithmetic number, because the mean of its divisors is an integer number (6819167200).

Almost surely, 2^13638334399 is an apocalyptic number.

13638334399 is a deficient number, since it is larger than the sum of its proper divisors (1).

13638334399 is an equidigital number, since it uses as much as digits as its factorization.

13638334399 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3779136, while the sum is 52.

The spelling of 13638334399 in words is "thirteen billion, six hundred thirty-eight million, three hundred thirty-four thousand, three hundred ninety-nine".