66311206305266 has 32 divisors (see below), whose sum is σ = 108102957177600. Its totient is φ = 30323796102720.

The previous prime is 66311206305257. The next prime is 66311206305343. The reversal of 66311206305266 is 66250360211366.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 66311206305266.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 165415931 + ... + 165816321.

It is an arithmetic number, because the mean of its divisors is an integer number (3378217411800).

Almost surely, 2^{66311206305266} is an apocalyptic number.

66311206305266 is a deficient number, since it is larger than the sum of its proper divisors (41791750872334).

66311206305266 is a wasteful number, since it uses less digits than its factorization.

66311206305266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 458954.

The product of its (nonzero) digits is 1399680, while the sum is 47.

The spelling of 66311206305266 in words is "sixty-six trillion, three hundred eleven billion, two hundred six million, three hundred five thousand, two hundred sixty-six".