16650566511066 has 32 divisors (see below), whose sum is σ = 37003965523200. Its totient is φ = 5549782845600.

The previous prime is 16650566511031. The next prime is 16650566511077. The reversal of 16650566511066 is 66011566505661.

16650566511066 is a `hidden beast` number, since 1 + 6 + 6 + 5 + 0 + 5 + 66 + 511 + 0 + 66 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10532035 + ... + 12009366.

It is an arithmetic number, because the mean of its divisors is an integer number (1156373922600).

Almost surely, 2^{16650566511066} is an apocalyptic number.

16650566511066 is an abundant number, since it is smaller than the sum of its proper divisors (20353399012134).

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

16650566511066 is a wasteful number, since it uses less digits than its factorization.

16650566511066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22555091 (or 22555085 counting only the distinct ones).

The product of its (nonzero) digits is 5832000, while the sum is 54.

The spelling of 16650566511066 in words is "sixteen trillion, six hundred fifty billion, five hundred sixty-six million, five hundred eleven thousand, sixty-six".