13522172399 has 2 divisors, whose sum is σ = 13522172400. Its totient is φ = 13522172398.

The previous prime is 13522172371. The next prime is 13522172471. The reversal of 13522172399 is 99327122531.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13522172399 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13522172899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6761086199 + 6761086200.

It is an arithmetic number, because the mean of its divisors is an integer number (6761086200).

Almost surely, 2^13522172399 is an apocalyptic number.

13522172399 is a deficient number, since it is larger than the sum of its proper divisors (1).

13522172399 is an equidigital number, since it uses as much as digits as its factorization.

13522172399 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 204120, while the sum is 44.

The spelling of 13522172399 in words is "thirteen billion, five hundred twenty-two million, one hundred seventy-two thousand, three hundred ninety-nine".