13521005441 has 16 divisors (see below), whose sum is σ = 14019327168. Its totient is φ = 13031928000.

The previous prime is 13521005419. The next prime is 13521005513. The reversal of 13521005441 is 14450012531.

It is a cyclic number.

It is not a de Polignac number, because 13521005441 - 2²² = 13516811137 is a prime.

It is a Smith number, since the sum of its digits (26) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13521005441.

It is not an unprimeable number, because it can be changed into a prime (13521055441) 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, 1328231 + ... + 1338371.

It is an arithmetic number, because the mean of its divisors is an integer number (876207948).

Almost surely, 2^13521005441 is an apocalyptic number.

It is an amenable number.

13521005441 is a deficient number, since it is larger than the sum of its proper divisors (498321727).

13521005441 is a wasteful number, since it uses less digits than its factorization.

13521005441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10592.

The product of its (nonzero) digits is 2400, while the sum is 26.

Adding to 13521005441 its reverse (14450012531), we get a palindrome (27971017972).

The spelling of 13521005441 in words is "thirteen billion, five hundred twenty-one million, five thousand, four hundred forty-one".