321318450028 has 24 divisors (see below), whose sum is σ = 565083332352. Its totient is φ = 159867451344.

The previous prime is 321318449983. The next prime is 321318450059. The reversal of 321318450028 is 820054813123.

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, 760951 + ... + 1105297.

It is an arithmetic number, because the mean of its divisors is an integer number (23545138848).

Almost surely, 2^321318450028 is an apocalyptic number.

It is an amenable number.

321318450028 is a deficient number, since it is larger than the sum of its proper divisors (243764882324).

321318450028 is a wasteful number, since it uses less digits than its factorization.

321318450028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 345501 (or 345499 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 37.

The spelling of 321318450028 in words is "three hundred twenty-one billion, three hundred eighteen million, four hundred fifty thousand, twenty-eight".