166516666652 has 12 divisors (see below), whose sum is σ = 333033333360. Its totient is φ = 71364285696.

The previous prime is 166516666649. The next prime is 166516666747. The reversal of 166516666652 is 256666615661.

166516666652 is an admirable number.

It is a hoax number, since the sum of its digits (56) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2973511877 + ... + 2973511932.

It is an arithmetic number, because the mean of its divisors is an integer number (27752777780).

Almost surely, 2^166516666652 is an apocalyptic number.

It is an amenable number.

166516666652 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

166516666652 is a wasteful number, since it uses less digits than its factorization.

166516666652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5947023820 (or 5947023818 counting only the distinct ones).

The product of its digits is 13996800, while the sum is 56.

The spelling of 166516666652 in words is "one hundred sixty-six billion, five hundred sixteen million, six hundred sixty-six thousand, six hundred fifty-two".