666364441166 has 16 divisors (see below), whose sum is σ = 1001373135840. Its totient is φ = 332573619840.

The previous prime is 666364441147. The next prime is 666364441177. The reversal of 666364441166 is 661144463666.

666364441166 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6216815 + ... + 6323093.

It is an arithmetic number, because the mean of its divisors is an integer number (62585820990).

Almost surely, 2^666364441166 is an apocalyptic number.

666364441166 is a deficient number, since it is larger than the sum of its proper divisors (335008694674).

666364441166 is a wasteful number, since it uses less digits than its factorization.

666364441166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111979.

The product of its digits is 8957952, while the sum is 53.

The spelling of 666364441166 in words is "six hundred sixty-six billion, three hundred sixty-four million, four hundred forty-one thousand, one hundred sixty-six".