13155331439 has 2 divisors, whose sum is σ = 13155331440. Its totient is φ = 13155331438.

The previous prime is 13155331433. The next prime is 13155331529. The reversal of 13155331439 is 93413355131.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13155331439 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 (13155331433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6577665719 + 6577665720.

It is an arithmetic number, because the mean of its divisors is an integer number (6577665720).

Almost surely, 2^13155331439 is an apocalyptic number.

13155331439 is a deficient number, since it is larger than the sum of its proper divisors (1).

13155331439 is an equidigital number, since it uses as much as digits as its factorization.

13155331439 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72900, while the sum is 38.

The spelling of 13155331439 in words is "thirteen billion, one hundred fifty-five million, three hundred thirty-one thousand, four hundred thirty-nine".