20181120000 has 440 divisors, whose sum is σ = 70291949376. Its totient is φ = 5136384000.

The previous prime is 20181119989. The next prime is 20181120031. The reversal of 20181120000 is 2118102.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 44159772 + ... + 44160228.

Almost surely, 2^20181120000 is an apocalyptic number.

20181120000 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 20181120000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35145974688).

20181120000 is an abundant number, since it is smaller than the sum of its proper divisors (50110829376).

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

20181120000 is an equidigital number, since it uses as much as digits as its factorization.

20181120000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 523 (or 490 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 20181120000 its reverse (2118102), we get a palindrome (20183238102).

The spelling of 20181120000 in words is "twenty billion, one hundred eighty-one million, one hundred twenty thousand".