166586858283276 has 144 divisors (see below), whose sum is σ = 435290657401600. Its totient is φ = 53684362763136.

The previous prime is 166586858283247. The next prime is 166586858283281. The reversal of 166586858283276 is 672382858685661.

166586858283276 is a `hidden beast` number, since 1 + 6 + 6 + 5 + 8 + 6 + 8 + 582 + 8 + 3 + 27 + 6 = 666.

It is a super-2 number, since 2×166586858283276² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 166586858283195 and 166586858283204.

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 47 ways as a sum of consecutive naturals, for example, 162653355 + ... + 163674333.

Almost surely, 2^{166586858283276} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 166586858283276, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (217645328700800).

166586858283276 is an abundant number, since it is smaller than the sum of its proper divisors (268703799118324).

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

166586858283276 is a wasteful number, since it uses less digits than its factorization.

166586858283276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1022108 (or 1022103 counting only the distinct ones).

The product of its digits is 11147673600, while the sum is 81.

The spelling of 166586858283276 in words is "one hundred sixty-six trillion, five hundred eighty-six billion, eight hundred fifty-eight million, two hundred eighty-three thousand, two hundred seventy-six".