166500056105 has 8 divisors (see below), whose sum is σ = 206689725000. Its totient is φ = 128606939776.

The previous prime is 166500056089. The next prime is 166500056111. The reversal of 166500056105 is 501650005661.

It can be written as a sum of positive squares in 4 ways, for example, as 37337446441 + 129162609664 = 193229^2 + 359392^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 166500056105 - 2⁴ = 166500056089 is a prime.

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 in 7 ways as a sum of consecutive naturals, for example, 574137980 + ... + 574138269.

It is an arithmetic number, because the mean of its divisors is an integer number (25836215625).

Almost surely, 2^166500056105 is an apocalyptic number.

It is an amenable number.

166500056105 is a deficient number, since it is larger than the sum of its proper divisors (40189668895).

166500056105 is a wasteful number, since it uses less digits than its factorization.

166500056105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1148276283.

The product of its (nonzero) digits is 27000, while the sum is 35.

The spelling of 166500056105 in words is "one hundred sixty-six billion, five hundred million, fifty-six thousand, one hundred five".