320063488864 has 144 divisors (see below), whose sum is σ = 753821283600. Its totient is φ = 133326606336.

The previous prime is 320063488747. The next prime is 320063488897. The reversal of 320063488864 is 468884360023.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8214132 + ... + 8253004.

It is an arithmetic number, because the mean of its divisors is an integer number (5234870025).

Almost surely, 2^320063488864 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 320063488864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (376910641800).

320063488864 is an abundant number, since it is smaller than the sum of its proper divisors (433757794736).

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

320063488864 is a wasteful number, since it uses less digits than its factorization.

320063488864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39045 (or 39030 counting only the distinct ones).

The product of its (nonzero) digits is 5308416, while the sum is 52.

The spelling of 320063488864 in words is "three hundred twenty billion, sixty-three million, four hundred eighty-eight thousand, eight hundred sixty-four".