13520043320 has 32 divisors (see below), whose sum is σ = 34765826400. Its totient is φ = 4635443328.

The previous prime is 13520043307. The next prime is 13520043353. The reversal of 13520043320 is 2334002531.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24142655 + ... + 24143214.

It is an arithmetic number, because the mean of its divisors is an integer number (1086432075).

Almost surely, 2^13520043320 is an apocalyptic number.

13520043320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13520043320 is an abundant number, since it is smaller than the sum of its proper divisors (21245783080).

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

13520043320 is a wasteful number, since it uses less digits than its factorization.

13520043320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48285887 (or 48285883 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 23.

Adding to 13520043320 its reverse (2334002531), we get a palindrome (15854045851).

The spelling of 13520043320 in words is "thirteen billion, five hundred twenty million, forty-three thousand, three hundred twenty".