13589185920 has 128 divisors (see below), whose sum is σ = 43360812000. Its totient is φ = 3619995648.

The previous prime is 13589185891. The next prime is 13589185927. The reversal of 13589185920 is 2958198531.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13589185927) 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, 2164546 + ... + 2170814.

Almost surely, 2^13589185920 is an apocalyptic number.

13589185920 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 13589185920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21680406000).

13589185920 is an abundant number, since it is smaller than the sum of its proper divisors (29771626080).

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

13589185920 is a wasteful number, since it uses less digits than its factorization.

13589185920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7420 (or 7408 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 51.

The spelling of 13589185920 in words is "thirteen billion, five hundred eighty-nine million, one hundred eighty-five thousand, nine hundred twenty".