13144442399 has 16 divisors (see below), whose sum is σ = 14387758080. Its totient is φ = 11909268000.

The previous prime is 13144442393. The next prime is 13144442411. The reversal of 13144442399 is 99324444131.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13144442399 is a prime.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13144442393) 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, 4919834 + ... + 4922504.

It is an arithmetic number, because the mean of its divisors is an integer number (899234880).

Almost surely, 2^13144442399 is an apocalyptic number.

13144442399 is a deficient number, since it is larger than the sum of its proper divisors (1243315681).

13144442399 is a wasteful number, since it uses less digits than its factorization.

13144442399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4022.

The product of its digits is 373248, while the sum is 44.

The spelling of 13144442399 in words is "thirteen billion, one hundred forty-four million, four hundred forty-two thousand, three hundred ninety-nine".