166620116284 has 12 divisors (see below), whose sum is σ = 295276156000. Its totient is φ = 82255500288.

The previous prime is 166620116281. The next prime is 166620116317. The reversal of 166620116284 is 482611026661.

It is a self number, because there is not a number n which added to its sum of digits gives 166620116284.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166620116281) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 263639109 + ... + 263639740.

Almost surely, 2^166620116284 is an apocalyptic number.

It is an amenable number.

166620116284 is a deficient number, since it is larger than the sum of its proper divisors (128656039716).

166620116284 is a wasteful number, since it uses less digits than its factorization.

166620116284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 527278932 (or 527278930 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 43.

The spelling of 166620116284 in words is "one hundred sixty-six billion, six hundred twenty million, one hundred sixteen thousand, two hundred eighty-four".