6668888888899 has 16 divisors (see below), whose sum is σ = 7023471611904. Its totient is φ = 6323826823200.

The previous prime is 6668888888897. The next prime is 6668888888941. The reversal of 6668888888899 is 9988888888666.

It is a cyclic number.

It is not a de Polignac number, because 6668888888899 - 2¹ = 6668888888897 is a prime.

It is a plaindrome in base 10.

It is a zygodrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (6668888888897) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 6207319 + ... + 7201984.

It is an arithmetic number, because the mean of its divisors is an integer number (438966975744).

Almost surely, 2^{6668888888899} is an apocalyptic number.

6668888888899 is a deficient number, since it is larger than the sum of its proper divisors (354582723005).

6668888888899 is a wasteful number, since it uses less digits than its factorization.

6668888888899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13409658.

The product of its digits is 293534171136, while the sum is 100.

The spelling of 6668888888899 in words is "six trillion, six hundred sixty-eight billion, eight hundred eighty-eight million, eight hundred eighty-eight thousand, eight hundred ninety-nine".