13520515320 has 192 divisors, whose sum is σ = 47405947680. Its totient is φ = 3322211328.

The previous prime is 13520515319. The next prime is 13520515381. The reversal of 13520515320 is 2351502531.

It is a happy number.

13520515320 is a `hidden beast` number, since 135 + 205 + 1 + 5 + 320 = 666.

13520515320 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3006994 + ... + 3011486.

Almost surely, 2^13520515320 is an apocalyptic number.

13520515320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13520515320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23702973840).

13520515320 is an abundant number, since it is smaller than the sum of its proper divisors (33885432360).

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

13520515320 is a wasteful number, since it uses less digits than its factorization.

13520515320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5166 (or 5159 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 27.

The spelling of 13520515320 in words is "thirteen billion, five hundred twenty million, five hundred fifteen thousand, three hundred twenty".