66111060606066 has 48 divisors (see below), whose sum is σ = 165152282914944. Its totient is φ = 18721716273792.

The previous prime is 66111060606061. The next prime is 66111060606167. The reversal of 66111060606066 is 66060606011166.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (66111060606061) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2321627166 + ... + 2321655641.

It is an arithmetic number, because the mean of its divisors is an integer number (3440672560728).

Almost surely, 2^{66111060606066} is an apocalyptic number.

66111060606066 is an abundant number, since it is smaller than the sum of its proper divisors (99041222308878).

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

66111060606066 is a wasteful number, since it uses less digits than its factorization.

66111060606066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4643282935 (or 4643282932 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 45.

The spelling of 66111060606066 in words is "sixty-six trillion, one hundred eleven billion, sixty million, six hundred six thousand, sixty-six".