166868123711 has 8 divisors (see below), whose sum is σ = 177138102960. Its totient is φ = 156648611968.

The previous prime is 166868123707. The next prime is 166868123759. The reversal of 166868123711 is 117321868661.

It is a happy number.

166868123711 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 166868123711 - 2² = 166868123707 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 166868123711.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166868123011) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 12610061 + ... + 12623286.

It is an arithmetic number, because the mean of its divisors is an integer number (22142262870).

Almost surely, 2^166868123711 is an apocalyptic number.

166868123711 is a deficient number, since it is larger than the sum of its proper divisors (10269979249).

166868123711 is a wasteful number, since it uses less digits than its factorization.

166868123711 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25233753.

The product of its digits is 580608, while the sum is 50.

The spelling of 166868123711 in words is "one hundred sixty-six billion, eight hundred sixty-eight million, one hundred twenty-three thousand, seven hundred eleven".