6668424248666 has 16 divisors (see below), whose sum is σ = 10166842801248. Its totient is φ = 3279479108400.

The previous prime is 6668424248639. The next prime is 6668424248669.

6668424248666 is nontrivially palindromic in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 6668424248596 and 6668424248605.

It is not an unprimeable number, because it can be changed into a prime (6668424248669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5040941 + ... + 6224783.

It is an arithmetic number, because the mean of its divisors is an integer number (635427675078).

Almost surely, 2^{6668424248666} is an apocalyptic number.

6668424248666 is a deficient number, since it is larger than the sum of its proper divisors (3498418552582).

6668424248666 is a wasteful number, since it uses less digits than its factorization.

6668424248666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1230077.

The product of its digits is 764411904, while the sum is 68.

The spelling of 6668424248666 in words is "six trillion, six hundred sixty-eight billion, four hundred twenty-four million, two hundred forty-eight thousand, six hundred sixty-six".