6666236143 has 16 divisors (see below), whose sum is σ = 7655109120. Its totient is φ = 5686550496.

The previous prime is 6666236141. The next prime is 6666236147. The reversal of 6666236143 is 3416326666.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 6666236143 - 2¹ = 6666236141 is a prime.

It is a super-3 number, since 3×6666236143³ (a number of 30 digits) contains 333 as substring.

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 6666236143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6666236141) 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 15 ways as a sum of consecutive naturals, for example, 3024880 + ... + 3027082.

It is an arithmetic number, because the mean of its divisors is an integer number (478444320).

Almost surely, 2^6666236143 is an apocalyptic number.

6666236143 is a deficient number, since it is larger than the sum of its proper divisors (988872977).

6666236143 is a wasteful number, since it uses less digits than its factorization.

6666236143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4086.

The product of its digits is 559872, while the sum is 43.

The square root of 6666236143 is about 81647.0216419436. The cubic root of 6666236143 is about 1882.0315430618.

The spelling of 6666236143 in words is "six billion, six hundred sixty-six million, two hundred thirty-six thousand, one hundred forty-three".