13444521302544 has 160 divisors (see below), whose sum is σ = 35755536499200. Its totient is φ = 4351297121280.

The previous prime is 13444521302491. The next prime is 13444521302581. The reversal of 13444521302544 is 44520312544431.

It is a junction number, because it is equal to n+sod(n) for n = 13444521302496 and 13444521302505.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1459928212 + ... + 1459937420.

It is an arithmetic number, because the mean of its divisors is an integer number (223472103120).

Almost surely, 2^{13444521302544} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13444521302544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17877768249600).

13444521302544 is an abundant number, since it is smaller than the sum of its proper divisors (22311015196656).

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

13444521302544 is a wasteful number, since it uses less digits than its factorization.

13444521302544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15573 (or 15567 counting only the distinct ones).

The product of its (nonzero) digits is 921600, while the sum is 42.

Adding to 13444521302544 its reverse (44520312544431), we get a palindrome (57964833846975).

The spelling of 13444521302544 in words is "thirteen trillion, four hundred forty-four billion, five hundred twenty-one million, three hundred two thousand, five hundred forty-four".