320428838945 has 8 divisors (see below), whose sum is σ = 384761257920. Its totient is φ = 256178637040.

The previous prime is 320428838911. The next prime is 320428838959. The reversal of 320428838945 is 549838824023.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 320428838945 - 2¹⁰ = 320428837921 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20545691 + ... + 20561280.

It is an arithmetic number, because the mean of its divisors is an integer number (48095157240).

Almost surely, 2^320428838945 is an apocalyptic number.

It is an amenable number.

320428838945 is a deficient number, since it is larger than the sum of its proper divisors (64332418975).

320428838945 is a wasteful number, since it uses less digits than its factorization.

320428838945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41108535.

The product of its (nonzero) digits is 13271040, while the sum is 56.

The spelling of 320428838945 in words is "three hundred twenty billion, four hundred twenty-eight million, eight hundred thirty-eight thousand, nine hundred forty-five".