13520433520 has 120 divisors (see below), whose sum is σ = 34622315280. Its totient is φ = 4906598400.

The previous prime is 13520433517. The next prime is 13520433529. The reversal of 13520433520 is 2533402531.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13520433529) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6203791 + ... + 6205969.

It is an arithmetic number, because the mean of its divisors is an integer number (288519294).

Almost surely, 2^13520433520 is an apocalyptic number.

13520433520 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 13520433520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17311157640).

13520433520 is an abundant number, since it is smaller than the sum of its proper divisors (21101881760).

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

13520433520 is a wasteful number, since it uses less digits than its factorization.

13520433520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2855 (or 2838 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 28.

The spelling of 13520433520 in words is "thirteen billion, five hundred twenty million, four hundred thirty-three thousand, five hundred twenty".