13531200521 has 16 divisors (see below), whose sum is σ = 13978863360. Its totient is φ = 13089578880.

The previous prime is 13531200511. The next prime is 13531200547. The reversal of 13531200521 is 12500213531.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 13531200521 - 2¹⁰ = 13531199497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13531200511) 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, 2734976 + ... + 2739918.

It is an arithmetic number, because the mean of its divisors is an integer number (873678960).

Almost surely, 2^13531200521 is an apocalyptic number.

It is an amenable number.

13531200521 is a deficient number, since it is larger than the sum of its proper divisors (447662839).

13531200521 is a wasteful number, since it uses less digits than its factorization.

13531200521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5536.

The product of its (nonzero) digits is 900, while the sum is 23.

The spelling of 13531200521 in words is "thirteen billion, five hundred thirty-one million, two hundred thousand, five hundred twenty-one".