13500081420 has 96 divisors (see below), whose sum is σ = 43235071488. Its totient is φ = 3083246592.

The previous prime is 13500081379. The next prime is 13500081431. The reversal of 13500081420 is 2418000531.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 536644 + ... + 561236.

It is an arithmetic number, because the mean of its divisors is an integer number (450365328).

Almost surely, 2^13500081420 is an apocalyptic number.

13500081420 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 13500081420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21617535744).

13500081420 is an abundant number, since it is smaller than the sum of its proper divisors (29734990068).

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

13500081420 is a wasteful number, since it uses less digits than its factorization.

13500081420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25919 (or 25917 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 24.

Adding to 13500081420 its reverse (2418000531), we get a palindrome (15918081951).

The spelling of 13500081420 in words is "thirteen billion, five hundred million, eighty-one thousand, four hundred twenty".