20113367500 has 60 divisors (see below), whose sum is σ = 44814092400. Its totient is φ = 7893496000.

The previous prime is 20113367489. The next prime is 20113367503. The reversal of 20113367500 is 576331102.

It is not an unprimeable number, because it can be changed into a prime (20113367503) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 56601 + ... + 208399.

It is an arithmetic number, because the mean of its divisors is an integer number (746901540).

Almost surely, 2^20113367500 is an apocalyptic number.

20113367500 is a gapful number since it is divisible by the number (20) 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 20113367500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22407046200).

20113367500 is an abundant number, since it is smaller than the sum of its proper divisors (24700724900).

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

20113367500 is a wasteful number, since it uses less digits than its factorization.

20113367500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151876 (or 151859 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 28.

Adding to 20113367500 its reverse (576331102), we get a palindrome (20689698602).

The spelling of 20113367500 in words is "twenty billion, one hundred thirteen million, three hundred sixty-seven thousand, five hundred".