166566051116 has 6 divisors (see below), whose sum is σ = 291490589460. Its totient is φ = 83283025556.

The previous prime is 166566051107. The next prime is 166566051121. The reversal of 166566051116 is 611150665661.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20820756386 + ... + 20820756393.

It is an arithmetic number, because the mean of its divisors is an integer number (48581764910).

Almost surely, 2^166566051116 is an apocalyptic number.

It is an amenable number.

166566051116 is a deficient number, since it is larger than the sum of its proper divisors (124924538344).

166566051116 is a wasteful number, since it uses less digits than its factorization.

166566051116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41641512783 (or 41641512781 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 44.

The spelling of 166566051116 in words is "one hundred sixty-six billion, five hundred sixty-six million, fifty-one thousand, one hundred sixteen".