13144305453444 has 72 divisors (see below), whose sum is σ = 36247006242720. Its totient is φ = 3983058230400.

The previous prime is 13144305453443. The next prime is 13144305453449. The reversal of 13144305453444 is 44435450344131.

13144305453444 is a `hidden beast` number, since 1 + 3 + 1 + 4 + 4 + 30 + 545 + 34 + 44 = 666.

It is a super-2 number, since 2×13144305453444² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13144305453444.

It is not an unprimeable number, because it can be changed into a prime (13144305453443) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27873864 + ... + 28341504.

It is an arithmetic number, because the mean of its divisors is an integer number (503430642260).

Almost surely, 2^{13144305453444} is an apocalyptic number.

It is an amenable number.

13144305453444 is an abundant number, since it is smaller than the sum of its proper divisors (23102700789276).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13144305453444 is a wasteful number, since it uses less digits than its factorization.

13144305453444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 538641 (or 538636 counting only the distinct ones).

The product of its (nonzero) digits is 2764800, while the sum is 45.

Adding to 13144305453444 its reverse (44435450344131), we get a palindrome (57579755797575).

The spelling of 13144305453444 in words is "thirteen trillion, one hundred forty-four billion, three hundred five million, four hundred fifty-three thousand, four hundred forty-four".