170001666172 has 24 divisors (see below), whose sum is σ = 320453927136. Its totient is φ = 78446102208.

The previous prime is 170001666161. The next prime is 170001666179. The reversal of 170001666172 is 271666100071.

170001666172 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×170001666172³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (170001666179) 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 7 ways as a sum of consecutive naturals, for example, 81568 + ... + 588775.

It is an arithmetic number, because the mean of its divisors is an integer number (13352246964).

Almost surely, 2^170001666172 is an apocalyptic number.

It is an amenable number.

170001666172 is a deficient number, since it is larger than the sum of its proper divisors (150452260964).

170001666172 is a wasteful number, since it uses less digits than its factorization.

170001666172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 675237 (or 675235 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 37.

The spelling of 170001666172 in words is "one hundred seventy billion, one million, six hundred sixty-six thousand, one hundred seventy-two".