20300320320 has 224 divisors, whose sum is σ = 74595532800. Its totient is φ = 4581218304.

The previous prime is 20300320303. The next prime is 20300320321. The reversal of 20300320320 is 2302300302.

It is a tau number, because it is divible by the number of its divisors (224).

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

It is a self number, because there is not a number n which added to its sum of digits gives 20300320320.

It is not an unprimeable number, because it can be changed into a prime (20300320321) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 511761 + ... + 549999.

Almost surely, 2^20300320320 is an apocalyptic number.

20300320320 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 20300320320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37297766400).

20300320320 is an abundant number, since it is smaller than the sum of its proper divisors (54295212480).

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

20300320320 is a wasteful number, since it uses less digits than its factorization.

20300320320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38345 (or 38335 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 15.

Adding to 20300320320 its reverse (2302300302), we get a palindrome (22602620622).

The spelling of 20300320320 in words is "twenty billion, three hundred million, three hundred twenty thousand, three hundred twenty".