320373322920 has 288 divisors, whose sum is σ = 1250280645120. Its totient is φ = 70865867520.

The previous prime is 320373322831. The next prime is 320373322921. The reversal of 320373322920 is 29223373023.

320373322920 is a `hidden beast` number, since 3 + 2 + 0 + 37 + 332 + 292 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (320373322921) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 253909 + ... + 839771.

It is an arithmetic number, because the mean of its divisors is an integer number (4341252240).

Almost surely, 2^320373322920 is an apocalyptic number.

320373322920 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 320373322920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (625140322560).

320373322920 is an abundant number, since it is smaller than the sum of its proper divisors (929907322200).

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

320373322920 is a wasteful number, since it uses less digits than its factorization.

320373322920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 585925 (or 585911 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 36.

Adding to 320373322920 its reverse (29223373023), we get a palindrome (349596695943).

The spelling of 320373322920 in words is "three hundred twenty billion, three hundred seventy-three million, three hundred twenty-two thousand, nine hundred twenty".