166666116615143 has 8 divisors (see below), whose sum is σ = 166740559180800. Its totient is φ = 166591690462008.

The previous prime is 166666116615133. The next prime is 166666116615241. The reversal of 166666116615143 is 341516611666661.

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 166666116615143 - 2⁴ = 166666116615127 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166666116615133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16233530 + ... + 24430712.

It is an arithmetic number, because the mean of its divisors is an integer number (20842569897600).

Almost surely, 2^{166666116615143} is an apocalyptic number.

166666116615143 is a deficient number, since it is larger than the sum of its proper divisors (74442565657).

166666116615143 is an equidigital number, since it uses as much as digits as its factorization.

166666116615143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8206261.

The product of its digits is 16796160, while the sum is 59.

The spelling of 166666116615143 in words is "one hundred sixty-six trillion, six hundred sixty-six billion, one hundred sixteen million, six hundred fifteen thousand, one hundred forty-three".