13520111441 has 8 divisors (see below), whose sum is σ = 14319667944. Its totient is φ = 12721027840.

The previous prime is 13520111399. The next prime is 13520111443. The reversal of 13520111441 is 14411102531.

13520111441 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 9896071441 + 3624040000 = 99479^2 + 60200^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13520111441 - 2⁶ = 13520111377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13520111443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58490 + ... + 174531.

It is an arithmetic number, because the mean of its divisors is an integer number (1789958493).

Almost surely, 2^13520111441 is an apocalyptic number.

It is an amenable number.

13520111441 is a deficient number, since it is larger than the sum of its proper divisors (799556503).

13520111441 is a wasteful number, since it uses less digits than its factorization.

13520111441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236451.

The product of its (nonzero) digits is 480, while the sum is 23.

Adding to 13520111441 its reverse (14411102531), we get a palindrome (27931213972).

The spelling of 13520111441 in words is "thirteen billion, five hundred twenty million, one hundred eleven thousand, four hundred forty-one".