266503745166 has 8 divisors (see below), whose sum is σ = 533007490344. Its totient is φ = 88834581720.

The previous prime is 266503745153. The next prime is 266503745171. The reversal of 266503745166 is 661547305662.

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

266503745166 is an admirable number.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22208645425 + ... + 22208645436.

It is an arithmetic number, because the mean of its divisors is an integer number (66625936293).

Almost surely, 2^266503745166 is an apocalyptic number.

266503745166 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

266503745166 is a wasteful number, since it uses less digits than its factorization.

266503745166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44417290866.

The product of its (nonzero) digits is 5443200, while the sum is 51.

The spelling of 266503745166 in words is "two hundred sixty-six billion, five hundred three million, seven hundred forty-five thousand, one hundred sixty-six".