13280436560 has 80 divisors (see below), whose sum is σ = 31571479296. Its totient is φ = 5192968704.

The previous prime is 13280436553. The next prime is 13280436569. The reversal of 13280436560 is 6563408231.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13280436569) 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, 4371362 + ... + 4374398.

Almost surely, 2^13280436560 is an apocalyptic number.

13280436560 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 13280436560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15785739648).

13280436560 is an abundant number, since it is smaller than the sum of its proper divisors (18291042736).

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

13280436560 is a wasteful number, since it uses less digits than its factorization.

13280436560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4260 (or 4254 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 38.

The spelling of 13280436560 in words is "thirteen billion, two hundred eighty million, four hundred thirty-six thousand, five hundred sixty".