16650323663 has 4 divisors (see below), whose sum is σ = 16651188600. Its totient is φ = 16649458728.

The previous prime is 16650323659. The next prime is 16650323693. The reversal of 16650323663 is 36632305661.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 16650323663 - 2² = 16650323659 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16650323663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16650323623) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 402920 + ... + 442317.

It is an arithmetic number, because the mean of its divisors is an integer number (4162797150).

Almost surely, 2^16650323663 is an apocalyptic number.

16650323663 is a deficient number, since it is larger than the sum of its proper divisors (864937).

16650323663 is an equidigital number, since it uses as much as digits as its factorization.

16650323663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 864936.

The product of its (nonzero) digits is 349920, while the sum is 41.

The spelling of 16650323663 in words is "sixteen billion, six hundred fifty million, three hundred twenty-three thousand, six hundred sixty-three".