13442521439 has 2 divisors, whose sum is σ = 13442521440. Its totient is φ = 13442521438.

The previous prime is 13442521429. The next prime is 13442521447. The reversal of 13442521439 is 93412524431.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13442521439 - 2⁴ = 13442521423 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 (13442521429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6721260719 + 6721260720.

It is an arithmetic number, because the mean of its divisors is an integer number (6721260720).

Almost surely, 2^13442521439 is an apocalyptic number.

13442521439 is a deficient number, since it is larger than the sum of its proper divisors (1).

13442521439 is an equidigital number, since it uses as much as digits as its factorization.

13442521439 is an evil number, because the sum of its binary digits is even.

The product of its digits is 103680, while the sum is 38.

The spelling of 13442521439 in words is "thirteen billion, four hundred forty-two million, five hundred twenty-one thousand, four hundred thirty-nine".