13535243520 has 144 divisors (see below), whose sum is σ = 43874214720. Its totient is φ = 3555459072.

The previous prime is 13535243479. The next prime is 13535243539. The reversal of 13535243520 is 2534253531.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 230976 + ... + 283584.

Almost surely, 2^13535243520 is an apocalyptic number.

13535243520 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 13535243520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21937107360).

13535243520 is an abundant number, since it is smaller than the sum of its proper divisors (30338971200).

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

13535243520 is an equidigital number, since it uses as much as digits as its factorization.

13535243520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52700 (or 52686 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 33.

The spelling of 13535243520 in words is "thirteen billion, five hundred thirty-five million, two hundred forty-three thousand, five hundred twenty".