320442200064 has 780 divisors, whose sum is σ = 1163310589584. Its totient is φ = 87472078848.

The previous prime is 320442200059. The next prime is 320442200083. The reversal of 320442200064 is 460002244023.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 373911124 + ... + 373911980.

Almost surely, 2^320442200064 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 320442200064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (581655294792).

320442200064 is an abundant number, since it is smaller than the sum of its proper divisors (842868389520).

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

320442200064 is an equidigital number, since it uses as much as digits as its factorization.

320442200064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 930 (or 892 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 320442200064 its reverse (460002244023), we get a palindrome (780444444087).

The spelling of 320442200064 in words is "three hundred twenty billion, four hundred forty-two million, two hundred thousand, sixty-four".