20320304204000 has 384 divisors, whose sum is σ = 54614821847040. Its totient is φ = 7397028864000.

The previous prime is 20320304203957. The next prime is 20320304204041. The reversal of 20320304204000 is 40240302302.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3075568697 + ... + 3075575303.

It is an arithmetic number, because the mean of its divisors is an integer number (142226098560).

Almost surely, 2^{20320304204000} is an apocalyptic number.

20320304204000 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 20320304204000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27307410923520).

20320304204000 is an abundant number, since it is smaller than the sum of its proper divisors (34294517643040).

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

20320304204000 is a wasteful number, since it uses less digits than its factorization.

20320304204000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8139 (or 8121 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 20.

Adding to 20320304204000 its reverse (40240302302), we get a palindrome (20360544506302).

The spelling of 20320304204000 in words is "twenty trillion, three hundred twenty billion, three hundred four million, two hundred four thousand".