13144442452 has 12 divisors (see below), whose sum is σ = 23239916980. Its totient is φ = 6504466176.

The previous prime is 13144442447. The next prime is 13144442453. The reversal of 13144442452 is 25424444131.

It can be written as a sum of positive squares in 2 ways, for example, as 4765969296 + 8378473156 = 69036^2 + 91534^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13144442453) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16938327 + ... + 16939102.

Almost surely, 2^13144442452 is an apocalyptic number.

It is an amenable number.

13144442452 is a deficient number, since it is larger than the sum of its proper divisors (10095474528).

13144442452 is a wasteful number, since it uses less digits than its factorization.

13144442452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33877530 (or 33877528 counting only the distinct ones).

The product of its digits is 61440, while the sum is 34.

Adding to 13144442452 its reverse (25424444131), we get a palindrome (38568886583).

The spelling of 13144442452 in words is "thirteen billion, one hundred forty-four million, four hundred forty-two thousand, four hundred fifty-two".