320221044335536 has 40 divisors (see below), whose sum is σ = 639237574442624. Its totient is φ = 155328420303360.

The previous prime is 320221044335527. The next prime is 320221044335651. The reversal of 320221044335536 is 635533440122023.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 320221044335492 and 320221044335501.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2247157056 + ... + 2247299551.

Almost surely, 2^{320221044335536} is an apocalyptic number.

It is an amenable number.

320221044335536 is a deficient number, since it is larger than the sum of its proper divisors (319016530107088).

320221044335536 is a wasteful number, since it uses less digits than its factorization.

320221044335536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4494456749 (or 4494456743 counting only the distinct ones).

The product of its (nonzero) digits is 1555200, while the sum is 43.

Adding to 320221044335536 its reverse (635533440122023), we get a palindrome (955754484457559).

The spelling of 320221044335536 in words is "three hundred twenty trillion, two hundred twenty-one billion, forty-four million, three hundred thirty-five thousand, five hundred thirty-six".