13520335145 has 16 divisors (see below), whose sum is σ = 16346188800. Its totient is φ = 10735334400.

The previous prime is 13520335141. The next prime is 13520335151. The reversal of 13520335145 is 54153302531.

It is not a de Polignac number, because 13520335145 - 2² = 13520335141 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13520335141) 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, 413030 + ... + 444560.

It is an arithmetic number, because the mean of its divisors is an integer number (1021636800).

Almost surely, 2^13520335145 is an apocalyptic number.

It is an amenable number.

13520335145 is a deficient number, since it is larger than the sum of its proper divisors (2825853655).

13520335145 is a wasteful number, since it uses less digits than its factorization.

13520335145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32176.

The product of its (nonzero) digits is 27000, while the sum is 32.

Adding to 13520335145 its reverse (54153302531), we get a palindrome (67673637676).

The spelling of 13520335145 in words is "thirteen billion, five hundred twenty million, three hundred thirty-five thousand, one hundred forty-five".