321450445156 has 27 divisors (see below), whose sum is σ = 565801488889. Its totient is φ = 159798233168.

The previous prime is 321450445133. The next prime is 321450445159. The reversal of 321450445156 is 651544054123.

The square root of 321450445156 is 566966.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 314956664100 + 6493781056 = 561210^2 + 80584^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (321450445159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 223383885 + ... + 223385323.

Almost surely, 2^321450445156 is an apocalyptic number.

321450445156 is the 566966-th square number.

It is an amenable number.

321450445156 is a deficient number, since it is larger than the sum of its proper divisors (244351043733).

321450445156 is an frugal number, since it uses more digits than its factorization.

321450445156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3276 (or 1638 counting only the distinct ones).

The product of its (nonzero) digits is 288000, while the sum is 40.

Adding to 321450445156 its reverse (651544054123), we get a palindrome (972994499279).

The spelling of 321450445156 in words is "three hundred twenty-one billion, four hundred fifty million, four hundred forty-five thousand, one hundred fifty-six".