166686683335 has 8 divisors (see below), whose sum is σ = 206476407936. Its totient is φ = 129047754720.

The previous prime is 166686683299. The next prime is 166686683347. The reversal of 166686683335 is 533386686661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 166686683335 - 2¹³ = 166686675143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 537698824 + ... + 537699133.

It is an arithmetic number, because the mean of its divisors is an integer number (25809550992).

Almost surely, 2^166686683335 is an apocalyptic number.

166686683335 is a deficient number, since it is larger than the sum of its proper divisors (39789724601).

166686683335 is a wasteful number, since it uses less digits than its factorization.

166686683335 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1075397993.

The product of its digits is 67184640, while the sum is 61.

The spelling of 166686683335 in words is "one hundred sixty-six billion, six hundred eighty-six million, six hundred eighty-three thousand, three hundred thirty-five".