16320316663 has 12 divisors (see below), whose sum is σ = 19123441632. Its totient is φ = 13886728800.

The previous prime is 16320316651. The next prime is 16320316679. The reversal of 16320316663 is 36661302361.

It is not a de Polignac number, because 16320316663 - 2⁹ = 16320316151 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16320316763) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1208863 + ... + 1222288.

It is an arithmetic number, because the mean of its divisors is an integer number (1593620136).

Almost surely, 2^16320316663 is an apocalyptic number.

16320316663 is a deficient number, since it is larger than the sum of its proper divisors (2803124969).

16320316663 is a wasteful number, since it uses less digits than its factorization.

16320316663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2431302 (or 2431295 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 37.

The spelling of 16320316663 in words is "sixteen billion, three hundred twenty million, three hundred sixteen thousand, six hundred sixty-three".