320453523020 has 24 divisors (see below), whose sum is σ = 694660541568. Its totient is φ = 124046524800.

The previous prime is 320453522899. The next prime is 320453523037. The reversal of 320453523020 is 20325354023.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 258429641 + ... + 258430880.

It is an arithmetic number, because the mean of its divisors is an integer number (28944189232).

Almost surely, 2^320453523020 is an apocalyptic number.

It is an amenable number.

320453523020 is an abundant number, since it is smaller than the sum of its proper divisors (374207018548).

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

320453523020 is a wasteful number, since it uses less digits than its factorization.

320453523020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 516860561 (or 516860559 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 29.

Adding to 320453523020 its reverse (20325354023), we get a palindrome (340778877043).

The spelling of 320453523020 in words is "three hundred twenty billion, four hundred fifty-three million, five hundred twenty-three thousand, twenty".