13443552255321 has 12 divisors (see below), whose sum is σ = 20440488809520. Its totient is φ = 8490664582200.

The previous prime is 13443552255317. The next prime is 13443552255337. The reversal of 13443552255321 is 12355225534431.

13443552255321 is a `hidden beast` number, since 1 + 3 + 4 + 4 + 3 + 55 + 22 + 553 + 21 = 666.

It is not a de Polignac number, because 13443552255321 - 2² = 13443552255317 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13443552255361) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39308632155 + ... + 39308632496.

It is an arithmetic number, because the mean of its divisors is an integer number (1703374067460).

Almost surely, 2^{13443552255321} is an apocalyptic number.

It is an amenable number.

13443552255321 is a deficient number, since it is larger than the sum of its proper divisors (6996936554199).

13443552255321 is a wasteful number, since it uses less digits than its factorization.

13443552255321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78617264676 (or 78617264673 counting only the distinct ones).

The product of its digits is 2160000, while the sum is 45.

Adding to 13443552255321 its reverse (12355225534431), we get a palindrome (25798777789752).

The spelling of 13443552255321 in words is "thirteen trillion, four hundred forty-three billion, five hundred fifty-two million, two hundred fifty-five thousand, three hundred twenty-one".