320221610956 has 12 divisors (see below), whose sum is σ = 603494574592. Its totient is φ = 147794589648.

The previous prime is 320221610953. The next prime is 320221610957. The reversal of 320221610956 is 659016122023.

It is not an unprimeable number, because it can be changed into a prime (320221610953) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 3079053900 + ... + 3079054003.

Almost surely, 2^320221610956 is an apocalyptic number.

It is an amenable number.

320221610956 is a deficient number, since it is larger than the sum of its proper divisors (283272963636).

320221610956 is a wasteful number, since it uses less digits than its factorization.

320221610956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6158107920 (or 6158107918 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 37.

Adding to 320221610956 its reverse (659016122023), we get a palindrome (979237732979).

The spelling of 320221610956 in words is "three hundred twenty billion, two hundred twenty-one million, six hundred ten thousand, nine hundred fifty-six".