13520011133 has 6 divisors (see below), whose sum is σ = 14133395934. Its totient is φ = 12932184056.

The previous prime is 13520011081. The next prime is 13520011199. The reversal of 13520011133 is 33111002531.

It can be written as a sum of positive squares in only one way, i.e., 7918686169 + 5601324964 = 88987^2 + 74842^2 .

It is not a de Polignac number, because 13520011133 - 2¹⁰ = 13520010109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13520011433) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12778310 + ... + 12779367.

It is an arithmetic number, because the mean of its divisors is an integer number (2355565989).

Almost surely, 2^13520011133 is an apocalyptic number.

It is an amenable number.

13520011133 is a deficient number, since it is larger than the sum of its proper divisors (613384801).

13520011133 is an equidigital number, since it uses as much as digits as its factorization.

13520011133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25557723 (or 25557700 counting only the distinct ones).

The product of its (nonzero) digits is 270, while the sum is 20.

Adding to 13520011133 its reverse (33111002531), we get a palindrome (46631013664).

The spelling of 13520011133 in words is "thirteen billion, five hundred twenty million, eleven thousand, one hundred thirty-three".