13638334379 has 2 divisors, whose sum is σ = 13638334380. Its totient is φ = 13638334378.

The previous prime is 13638334373. The next prime is 13638334399. The reversal of 13638334379 is 97343383631.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13638334379 - 2⁴ = 13638334363 is a prime.

It is not a weakly prime, because it can be changed into another prime (13638334373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6819167189 + 6819167190.

It is an arithmetic number, because the mean of its divisors is an integer number (6819167190).

Almost surely, 2^13638334379 is an apocalyptic number.

13638334379 is a deficient number, since it is larger than the sum of its proper divisors (1).

13638334379 is an equidigital number, since it uses as much as digits as its factorization.

13638334379 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2939328, while the sum is 50.

The spelling of 13638334379 in words is "thirteen billion, six hundred thirty-eight million, three hundred thirty-four thousand, three hundred seventy-nine".