13613216560 has 20 divisors (see below), whose sum is σ = 31650728688. Its totient is φ = 5445286592.

The previous prime is 13613216509. The next prime is 13613216567. The reversal of 13613216560 is 6561231631.

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (13613216567) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85082524 + ... + 85082683.

Almost surely, 2^13613216560 is an apocalyptic number.

13613216560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13613216560 is an abundant number, since it is smaller than the sum of its proper divisors (18037512128).

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

13613216560 is a wasteful number, since it uses less digits than its factorization.

13613216560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170165220 (or 170165214 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 34.

The spelling of 13613216560 in words is "thirteen billion, six hundred thirteen million, two hundred sixteen thousand, five hundred sixty".