13639115197 has 2 divisors, whose sum is σ = 13639115198. Its totient is φ = 13639115196.

The previous prime is 13639115177. The next prime is 13639115201. The reversal of 13639115197 is 79151193631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13532901561 + 106213636 = 116331^2 + 10306^2 .

It is an emirp because it is prime and its reverse (79151193631) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13639115197 - 2¹⁹ = 13638590909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13639115107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6819557598 + 6819557599.

It is an arithmetic number, because the mean of its divisors is an integer number (6819557599).

Almost surely, 2^13639115197 is an apocalyptic number.

It is an amenable number.

13639115197 is a deficient number, since it is larger than the sum of its proper divisors (1).

13639115197 is an equidigital number, since it uses as much as digits as its factorization.

13639115197 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 153090, while the sum is 46.

The spelling of 13639115197 in words is "thirteen billion, six hundred thirty-nine million, one hundred fifteen thousand, one hundred ninety-seven".