13504120520 has 64 divisors (see below), whose sum is σ = 33159974400. Its totient is φ = 4908590080.

The previous prime is 13504120519. The next prime is 13504120523. The reversal of 13504120520 is 2502140531.

It is a super-2 number, since 2×13504120520² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13504120523) 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, 1473392 + ... + 1482528.

It is an arithmetic number, because the mean of its divisors is an integer number (518124600).

Almost surely, 2^13504120520 is an apocalyptic number.

13504120520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13504120520 is an abundant number, since it is smaller than the sum of its proper divisors (19655853880).

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

13504120520 is a wasteful number, since it uses less digits than its factorization.

13504120520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12518 (or 12514 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The spelling of 13504120520 in words is "thirteen billion, five hundred four million, one hundred twenty thousand, five hundred twenty".