20321300020 has 96 divisors (see below), whose sum is σ = 49434336000. Its totient is φ = 6872822784.

The previous prime is 20321299931. The next prime is 20321300053. The reversal of 20321300020 is 2000312302.

It is a happy number.

It is a congruent number.

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, 13118206 + ... + 13119754.

It is an arithmetic number, because the mean of its divisors is an integer number (514941000).

Almost surely, 2^20321300020 is an apocalyptic number.

20321300020 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 20321300020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24717168000).

20321300020 is an abundant number, since it is smaller than the sum of its proper divisors (29113035980).

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

20321300020 is a wasteful number, since it uses less digits than its factorization.

20321300020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2777 (or 2775 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 13.

Adding to 20321300020 its reverse (2000312302), we get a palindrome (22321612322).

The spelling of 20321300020 in words is "twenty billion, three hundred twenty-one million, three hundred thousand, twenty".