166666666803306 has 32 divisors (see below), whose sum is σ = 333852117056640. Its totient is φ = 55469152229376.

The previous prime is 166666666803253. The next prime is 166666666803353. The reversal of 166666666803306 is 603308666666661.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3449050 + ... + 18580346.

It is an arithmetic number, because the mean of its divisors is an integer number (10432878658020).

Almost surely, 2^{166666666803306} is an apocalyptic number.

166666666803306 is an abundant number, since it is smaller than the sum of its proper divisors (167185450253334).

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

166666666803306 is a wasteful number, since it uses less digits than its factorization.

166666666803306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15134158.

The product of its (nonzero) digits is 725594112, while the sum is 69.

The spelling of 166666666803306 in words is "one hundred sixty-six trillion, six hundred sixty-six billion, six hundred sixty-six million, eight hundred three thousand, three hundred six".