320363426220 has 144 divisors (see below), whose sum is σ = 916073867520. Its totient is φ = 83628932352.

The previous prime is 320363426219. The next prime is 320363426231. The reversal of 320363426220 is 22624363023.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 431175169 + ... + 431175911.

It is an arithmetic number, because the mean of its divisors is an integer number (6361624080).

Almost surely, 2^320363426220 is an apocalyptic number.

320363426220 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 320363426220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (458036933760).

320363426220 is an abundant number, since it is smaller than the sum of its proper divisors (595710441300).

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

320363426220 is a wasteful number, since it uses less digits than its factorization.

320363426220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1512 (or 1161 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 33.

Adding to 320363426220 its reverse (22624363023), we get a palindrome (342987789243).

The spelling of 320363426220 in words is "three hundred twenty billion, three hundred sixty-three million, four hundred twenty-six thousand, two hundred twenty".