166660661116 has 12 divisors (see below), whose sum is σ = 291664800000. Its totient is φ = 83327861120.

The previous prime is 166660661107. The next prime is 166660661161. The reversal of 166660661116 is 611166066661.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 461116 + ... + 738883.

It is an arithmetic number, because the mean of its divisors is an integer number (24305400000).

Almost surely, 2^166660661116 is an apocalyptic number.

It is an amenable number.

166660661116 is a deficient number, since it is larger than the sum of its proper divisors (125004138884).

166660661116 is a wasteful number, since it uses less digits than its factorization.

166660661116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1234724 (or 1234722 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 46.

The spelling of 166660661116 in words is "one hundred sixty-six billion, six hundred sixty million, six hundred sixty-one thousand, one hundred sixteen".