320013202020 has 96 divisors (see below), whose sum is σ = 920478214656. Its totient is φ = 83010240000.

The previous prime is 320013202013. The next prime is 320013202021. The reversal of 320013202020 is 20202310023.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (320013202021) 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, 10532050 + ... + 10562390.

It is an arithmetic number, because the mean of its divisors is an integer number (9588314736).

Almost surely, 2^320013202020 is an apocalyptic number.

320013202020 is a gapful number since it is divisible by the number (30) 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 320013202020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (460239107328).

320013202020 is an abundant number, since it is smaller than the sum of its proper divisors (600465012636).

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

320013202020 is a wasteful number, since it uses less digits than its factorization.

320013202020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35141 (or 35139 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

Adding to 320013202020 its reverse (20202310023), we get a palindrome (340215512043).

The spelling of 320013202020 in words is "three hundred twenty billion, thirteen million, two hundred two thousand, twenty".