166555812976 has 60 divisors (see below), whose sum is σ = 376883924760. Its totient is φ = 71096592000.

The previous prime is 166555812959. The next prime is 166555813009. The reversal of 166555812976 is 679218555661.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 226411 + ... + 619978.

It is an arithmetic number, because the mean of its divisors is an integer number (6281398746).

Almost surely, 2^166555812976 is an apocalyptic number.

166555812976 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

166555812976 is an abundant number, since it is smaller than the sum of its proper divisors (210328111784).

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

166555812976 is a wasteful number, since it uses less digits than its factorization.

166555812976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 846662 (or 846649 counting only the distinct ones).

The product of its digits is 27216000, while the sum is 61.

The spelling of 166555812976 in words is "one hundred sixty-six billion, five hundred fifty-five million, eight hundred twelve thousand, nine hundred seventy-six".