320788775423 has 4 divisors (see below), whose sum is σ = 321307013160. Its totient is φ = 320270537688.

The previous prime is 320788775399. The next prime is 320788775429. The reversal of 320788775423 is 324577887023.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 320788775423 - 2²² = 320784581119 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320788775429) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 259117940 + ... + 259119177.

It is an arithmetic number, because the mean of its divisors is an integer number (80326753290).

Almost surely, 2^320788775423 is an apocalyptic number.

320788775423 is a deficient number, since it is larger than the sum of its proper divisors (518237737).

320788775423 is an equidigital number, since it uses as much as digits as its factorization.

320788775423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 518237736.

The product of its (nonzero) digits is 15805440, while the sum is 56.

The spelling of 320788775423 in words is "three hundred twenty billion, seven hundred eighty-eight million, seven hundred seventy-five thousand, four hundred twenty-three".