13647997439 has 16 divisors (see below), whose sum is σ = 14368742400. Its totient is φ = 12938270400.

The previous prime is 13647997397. The next prime is 13647997459. The reversal of 13647997439 is 93479974631.

It is a cyclic number.

It is not a de Polignac number, because 13647997439 - 2¹² = 13647993343 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13647997459) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1582862 + ... + 1591460.

It is an arithmetic number, because the mean of its divisors is an integer number (898046400).

Almost surely, 2^13647997439 is an apocalyptic number.

13647997439 is a deficient number, since it is larger than the sum of its proper divisors (720744961).

13647997439 is a wasteful number, since it uses less digits than its factorization.

13647997439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9230.

The product of its digits is 30862944, while the sum is 62.

The spelling of 13647997439 in words is "thirteen billion, six hundred forty-seven million, nine hundred ninety-seven thousand, four hundred thirty-nine".