13521455135 has 32 divisors (see below), whose sum is σ = 17067682368. Its totient is φ = 10273536000.

The previous prime is 13521455131. The next prime is 13521455141. The reversal of 13521455135 is 53155412531.

It is not a de Polignac number, because 13521455135 - 2² = 13521455131 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13521455095 and 13521455104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13521455131) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1282385 + ... + 1292885.

It is an arithmetic number, because the mean of its divisors is an integer number (533365074).

Almost surely, 2^13521455135 is an apocalyptic number.

13521455135 is a deficient number, since it is larger than the sum of its proper divisors (3546227233).

13521455135 is a wasteful number, since it uses less digits than its factorization.

13521455135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10715.

The product of its digits is 45000, while the sum is 35.

Adding to 13521455135 its reverse (53155412531), we get a palindrome (66676867666).

The spelling of 13521455135 in words is "thirteen billion, five hundred twenty-one million, four hundred fifty-five thousand, one hundred thirty-five".