66116461166 has 64 divisors (see below), whose sum is σ = 123342912000. Its totient is φ = 26476313472.

The previous prime is 66116461163. The next prime is 66116461223.

It is a happy number.

66116461166 is nontrivially palindromic in base 10.

It is a super-3 number, since 3×66116461166³ (a number of 33 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66116461163) 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 31 ways as a sum of consecutive naturals, for example, 1600625 + ... + 1641411.

It is an arithmetic number, because the mean of its divisors is an integer number (1927233000).

Almost surely, 2^66116461166 is an apocalyptic number.

66116461166 is a deficient number, since it is larger than the sum of its proper divisors (57226450834).

66116461166 is a wasteful number, since it uses less digits than its factorization.

66116461166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40966 (or 40952 counting only the distinct ones).

The product of its digits is 186624, while the sum is 44.

The spelling of 66116461166 in words is "sixty-six billion, one hundred sixteen million, four hundred sixty-one thousand, one hundred sixty-six".