13365604520 has 64 divisors (see below), whose sum is σ = 31568382720. Its totient is φ = 5083116544.

The previous prime is 13365604513. The next prime is 13365604537. The reversal of 13365604520 is 2540656331.

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, 110144 + ... + 197136.

It is an arithmetic number, because the mean of its divisors is an integer number (493255980).

Almost surely, 2^13365604520 is an apocalyptic number.

13365604520 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 13365604520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15784191360).

13365604520 is an abundant number, since it is smaller than the sum of its proper divisors (18202778200).

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

13365604520 is a wasteful number, since it uses less digits than its factorization.

13365604520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87194 (or 87190 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 35.

The spelling of 13365604520 in words is "thirteen billion, three hundred sixty-five million, six hundred four thousand, five hundred twenty".