13530420520 has 16 divisors (see below), whose sum is σ = 30443446260. Its totient is φ = 5412168192.

The previous prime is 13530420493. The next prime is 13530420523. The reversal of 13530420520 is 2502403531.

13530420520 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 12307239844 + 1223180676 = 110938^2 + 34974^2 .

It is not an unprimeable number, because it can be changed into a prime (13530420523) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 169130217 + ... + 169130296.

Almost surely, 2^13530420520 is an apocalyptic number.

13530420520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13530420520 is an abundant number, since it is smaller than the sum of its proper divisors (16913025740).

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

13530420520 is a wasteful number, since it uses less digits than its factorization.

13530420520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338260524 (or 338260520 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 25.

The spelling of 13530420520 in words is "thirteen billion, five hundred thirty million, four hundred twenty thousand, five hundred twenty".