320465273872 has 20 divisors (see below), whose sum is σ = 636045407676. Its totient is φ = 156324523520.

The previous prime is 320465273867. The next prime is 320465273899. The reversal of 320465273872 is 278372564023.

It can be written as a sum of positive squares in 2 ways, for example, as 145911776256 + 174553497616 = 381984^2 + 417796^2 .

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 3 ways as a sum of consecutive naturals, for example, 244256413 + ... + 244257724.

Almost surely, 2^320465273872 is an apocalyptic number.

It is an amenable number.

320465273872 is a deficient number, since it is larger than the sum of its proper divisors (315580133804).

320465273872 is a wasteful number, since it uses less digits than its factorization.

320465273872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 488514186 (or 488514180 counting only the distinct ones).

The product of its (nonzero) digits is 3386880, while the sum is 49.

The spelling of 320465273872 in words is "three hundred twenty billion, four hundred sixty-five million, two hundred seventy-three thousand, eight hundred seventy-two".