166666685283 has 48 divisors (see below), whose sum is σ = 290728888320. Its totient is φ = 89944126272.

The previous prime is 166666685261. The next prime is 166666685293. The reversal of 166666685283 is 382586666661.

It is a happy number.

It is not a de Polignac number, because 166666685283 - 2¹⁴ = 166666668899 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a self number, because there is not a number n which added to its sum of digits gives 166666685283.

It is not an unprimeable number, because it can be changed into a prime (166666685243) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 613516 + ... + 842457.

It is an arithmetic number, because the mean of its divisors is an integer number (6056851840).

Almost surely, 2^166666685283 is an apocalyptic number.

166666685283 is a deficient number, since it is larger than the sum of its proper divisors (124062203037).

166666685283 is a wasteful number, since it uses less digits than its factorization.

166666685283 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1456088 (or 1456085 counting only the distinct ones).

The product of its digits is 89579520, while the sum is 63.

The spelling of 166666685283 in words is "one hundred sixty-six billion, six hundred sixty-six million, six hundred eighty-five thousand, two hundred eighty-three".