13521456522 has 96 divisors (see below), whose sum is σ = 36231616512. Its totient is φ = 3695283504.

The previous prime is 13521456521. The next prime is 13521456547. The reversal of 13521456522 is 22565412531.

13521456522 is a `hidden beast` number, since 13 + 52 + 14 + 565 + 22 = 666.

It is not an unprimeable number, because it can be changed into a prime (13521456521) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8158 + ... + 164649.

It is an arithmetic number, because the mean of its divisors is an integer number (377412672).

Almost surely, 2^13521456522 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13521456522, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18115808256).

13521456522 is an abundant number, since it is smaller than the sum of its proper divisors (22710159990).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13521456522 is a wasteful number, since it uses less digits than its factorization.

13521456522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172854 (or 172842 counting only the distinct ones).

The product of its digits is 72000, while the sum is 36.

The spelling of 13521456522 in words is "thirteen billion, five hundred twenty-one million, four hundred fifty-six thousand, five hundred twenty-two".