20384100000 has 864 divisors, whose sum is σ = 82918442880. Its totient is φ = 4704000000.

The previous prime is 20384099963. The next prime is 20384100001. The reversal of 20384100000 is 148302.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (20384100001) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 287099965 + ... + 287100035.

It is an arithmetic number, because the mean of its divisors is an integer number (95970420).

Almost surely, 2^20384100000 is an apocalyptic number.

20384100000 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 20384100000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41459221440).

20384100000 is an abundant number, since it is smaller than the sum of its proper divisors (62534342880).

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

20384100000 is a wasteful number, since it uses less digits than its factorization.

20384100000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152 (or 121 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 20384100000 its reverse (148302), we get a palindrome (20384248302).

The spelling of 20384100000 in words is "twenty billion, three hundred eighty-four million, one hundred thousand".