13521365113 has 8 divisors (see below), whose sum is σ = 13859523720. Its totient is φ = 13183605120.

The previous prime is 13521365071. The next prime is 13521365119. The reversal of 13521365113 is 31156312531.

It can be written as a sum of positive squares in 4 ways, for example, as 136726249 + 13384638864 = 11693^2 + 115692^2 .

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 13521365113 - 2⁹ = 13521364601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13521365119) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30370 + ... + 167227.

It is an arithmetic number, because the mean of its divisors is an integer number (1732440465).

Almost surely, 2^13521365113 is an apocalyptic number.

It is an amenable number.

13521365113 is a deficient number, since it is larger than the sum of its proper divisors (338158607).

13521365113 is a wasteful number, since it uses less digits than its factorization.

13521365113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199307.

The product of its digits is 8100, while the sum is 31.

Adding to 13521365113 its reverse (31156312531), we get a palindrome (44677677644).

The spelling of 13521365113 in words is "thirteen billion, five hundred twenty-one million, three hundred sixty-five thousand, one hundred thirteen".