320216666736 has 40 divisors (see below), whose sum is σ = 830445200784. Its totient is φ = 106323558400.

The previous prime is 320216666719. The next prime is 320216666773. The reversal of 320216666736 is 637666612023.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

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, 12966615 + ... + 12991286.

Almost surely, 2^320216666736 is an apocalyptic number.

It is an amenable number.

320216666736 is an abundant number, since it is smaller than the sum of its proper divisors (510228534048).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

320216666736 is a wasteful number, since it uses less digits than its factorization.

320216666736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25958169 (or 25958163 counting only the distinct ones).

The product of its (nonzero) digits is 1959552, while the sum is 48.

The spelling of 320216666736 in words is "three hundred twenty billion, two hundred sixteen million, six hundred sixty-six thousand, seven hundred thirty-six".