13581738439 has 2 divisors, whose sum is σ = 13581738440. Its totient is φ = 13581738438.

The previous prime is 13581738427. The next prime is 13581738497. The reversal of 13581738439 is 93483718531.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13581738439 - 2¹¹ = 13581736391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13581738409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6790869219 + 6790869220.

It is an arithmetic number, because the mean of its divisors is an integer number (6790869220).

Almost surely, 2^13581738439 is an apocalyptic number.

13581738439 is a deficient number, since it is larger than the sum of its proper divisors (1).

13581738439 is an equidigital number, since it uses as much as digits as its factorization.

13581738439 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2177280, while the sum is 52.

The spelling of 13581738439 in words is "thirteen billion, five hundred eighty-one million, seven hundred thirty-eight thousand, four hundred thirty-nine".