166717183871056 has 40 divisors (see below), whose sum is σ = 397556361542144. Its totient is φ = 65954050761600.

The previous prime is 166717183871053. The next prime is 166717183871149. The reversal of 166717183871056 is 650178381717661.

It is a junction number, because it is equal to n+sod(n) for n = 166717183870982 and 166717183871000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166717183871053) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57251778720 + ... + 57251781631.

Almost surely, 2^{166717183871056} is an apocalyptic number.

166717183871056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

166717183871056 is an abundant number, since it is smaller than the sum of its proper divisors (230839177671088).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

166717183871056 is a wasteful number, since it uses less digits than its factorization.

166717183871056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114503560379 (or 114503560373 counting only the distinct ones).

The product of its (nonzero) digits is 71124480, while the sum is 67.

The spelling of 166717183871056 in words is "one hundred sixty-six trillion, seven hundred seventeen billion, one hundred eighty-three million, eight hundred seventy-one thousand, fifty-six".