166683168016656 has 40 divisors (see below), whose sum is σ = 430598646690624. Its totient is φ = 55560996309120.

The previous prime is 166683168016583. The next prime is 166683168016663. The reversal of 166683168016656 is 656610861386661.

It is an unprimeable number.

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, 84390330 + ... + 86342886.

Almost surely, 2^{166683168016656} is an apocalyptic number.

166683168016656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

166683168016656 is an abundant number, since it is smaller than the sum of its proper divisors (263915478673968).

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

166683168016656 is a wasteful number, since it uses less digits than its factorization.

166683168016656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3731039 (or 3731033 counting only the distinct ones).

The product of its (nonzero) digits is 268738560, while the sum is 69.

The spelling of 166683168016656 in words is "one hundred sixty-six trillion, six hundred eighty-three billion, one hundred sixty-eight million, sixteen thousand, six hundred fifty-six".