166666851683 has 12 divisors (see below), whose sum is σ = 172343019864. Its totient is φ = 161162668800.

The previous prime is 166666851679. The next prime is 166666851707. The reversal of 166666851683 is 386158666661.

It is not a de Polignac number, because 166666851683 - 2² = 166666851679 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166666851613) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 248753 + ... + 628658.

It is an arithmetic number, because the mean of its divisors is an integer number (14361918322).

Almost surely, 2^166666851683 is an apocalyptic number.

166666851683 is a deficient number, since it is larger than the sum of its proper divisors (5676168181).

166666851683 is an equidigital number, since it uses as much as digits as its factorization.

166666851683 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 877606 (or 877565 counting only the distinct ones).

The product of its digits is 44789760, while the sum is 62.

The spelling of 166666851683 in words is "one hundred sixty-six billion, six hundred sixty-six million, eight hundred fifty-one thousand, six hundred eighty-three".