166066001111 has 4 divisors (see below), whose sum is σ = 170116391424. Its totient is φ = 162015610800.

The previous prime is 166066001107. The next prime is 166066001201. The reversal of 166066001111 is 111100660661.

166066001111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 166066001111 - 2² = 166066001107 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166066001411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2025195095 + ... + 2025195176.

It is an arithmetic number, because the mean of its divisors is an integer number (42529097856).

Almost surely, 2^166066001111 is an apocalyptic number.

166066001111 is a deficient number, since it is larger than the sum of its proper divisors (4050390313).

166066001111 is an equidigital number, since it uses as much as digits as its factorization.

166066001111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4050390312.

The product of its (nonzero) digits is 1296, while the sum is 29.

Adding to 166066001111 its reverse (111100660661), we get a palindrome (277166661772).

The spelling of 166066001111 in words is "one hundred sixty-six billion, sixty-six million, one thousand, one hundred eleven".