20302203312320 has 224 divisors, whose sum is σ = 51486582254976. Its totient is φ = 7608714854400.

The previous prime is 20302203312289. The next prime is 20302203312329. The reversal of 20302203312320 is 2321330220302.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is not an unprimeable number, because it can be changed into a prime (20302203312329) 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, 108105542 + ... + 108293178.

Almost surely, 2^{20302203312320} is an apocalyptic number.

20302203312320 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 20302203312320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25743291127488).

20302203312320 is an abundant number, since it is smaller than the sum of its proper divisors (31184378942656).

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

20302203312320 is a wasteful number, since it uses less digits than its factorization.

20302203312320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187979 (or 187969 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 23.

Adding to 20302203312320 its reverse (2321330220302), we get a palindrome (22623533532622).

The spelling of 20302203312320 in words is "twenty trillion, three hundred two billion, two hundred three million, three hundred twelve thousand, three hundred twenty".