13144440513 has 16 divisors (see below), whose sum is σ = 18002984576. Its totient is φ = 8524517760.

The previous prime is 13144440497. The next prime is 13144440557. The reversal of 13144440513 is 31504444131.

It is not a de Polignac number, because 13144440513 - 2⁴ = 13144440497 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13144440563) 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, 960348 + ... + 973938.

It is an arithmetic number, because the mean of its divisors is an integer number (1125186536).

Almost surely, 2^13144440513 is an apocalyptic number.

It is an amenable number.

13144440513 is a deficient number, since it is larger than the sum of its proper divisors (4858544063).

13144440513 is a wasteful number, since it uses less digits than its factorization.

13144440513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22344.

The product of its (nonzero) digits is 11520, while the sum is 30.

Adding to 13144440513 its reverse (31504444131), we get a palindrome (44648884644).

The spelling of 13144440513 in words is "thirteen billion, one hundred forty-four million, four hundred forty thousand, five hundred thirteen".