16500050555666 has 8 divisors (see below), whose sum is σ = 24762072968064. Its totient is φ = 8246026232980.

The previous prime is 16500050555629. The next prime is 16500050555711. The reversal of 16500050555666 is 66655505000561.

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 1999517270 + ... + 1999525521.

It is an arithmetic number, because the mean of its divisors is an integer number (3095259121008).

Almost surely, 2^{16500050555666} is an apocalyptic number.

16500050555666 is a deficient number, since it is larger than the sum of its proper divisors (8262022412398).

16500050555666 is a wasteful number, since it uses less digits than its factorization.

16500050555666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3999044856.

The product of its (nonzero) digits is 4050000, while the sum is 50.

The spelling of 16500050555666 in words is "sixteen trillion, five hundred billion, fifty million, five hundred fifty-five thousand, six hundred sixty-six".