6201171666 has 24 divisors (see below), whose sum is σ = 13625112384. Its totient is φ = 2037943320.

The previous prime is 6201171659. The next prime is 6201171709. The reversal of 6201171666 is 6661711026.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 6201171666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2424846 + ... + 2427401.

It is an arithmetic number, because the mean of its divisors is an integer number (567713016).

Almost surely, 2^6201171666 is an apocalyptic number.

6201171666 is an abundant number, since it is smaller than the sum of its proper divisors (7423940718).

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

6201171666 is a wasteful number, since it uses less digits than its factorization.

6201171666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4852326 (or 4852323 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 6201171666 is about 78747.5184751875. The cubic root of 6201171666 is about 1837.2062661949.

The spelling of 6201171666 in words is "six billion, two hundred one million, one hundred seventy-one thousand, six hundred sixty-six".