20320133324320 has 192 divisors, whose sum is σ = 51113992809600. Its totient is φ = 7611910225920.

The previous prime is 20320133324311. The next prime is 20320133324341. The reversal of 20320133324320 is 2342333102302.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 253261810 + ... + 253342030.

It is an arithmetic number, because the mean of its divisors is an integer number (266218712550).

Almost surely, 2^{20320133324320} is an apocalyptic number.

20320133324320 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 20320133324320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25556996404800).

20320133324320 is an abundant number, since it is smaller than the sum of its proper divisors (30793859485280).

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

20320133324320 is a wasteful number, since it uses less digits than its factorization.

20320133324320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81211 (or 81203 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 28.

Adding to 20320133324320 its reverse (2342333102302), we get a palindrome (22662466426622).

The spelling of 20320133324320 in words is "twenty trillion, three hundred twenty billion, one hundred thirty-three million, three hundred twenty-four thousand, three hundred twenty".