6664368634666 has 8 divisors (see below), whose sum is σ = 10041380544384. Its totient is φ = 3317241786540.

The previous prime is 6664368634663. The next prime is 6664368634699.

6664368634666 is nontrivially palindromic in base 10.

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

It is a junction number, because it is equal to n+sod(n) for n = 6664368634595 and 6664368634604.

It is not an unprimeable number, because it can be changed into a prime (6664368634663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7471264840 + ... + 7471265731.

It is an arithmetic number, because the mean of its divisors is an integer number (1255172568048).

Almost surely, 2^{6664368634666} is an apocalyptic number.

6664368634666 is a deficient number, since it is larger than the sum of its proper divisors (3377011909718).

6664368634666 is a wasteful number, since it uses less digits than its factorization.

6664368634666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14942530796.

The product of its digits is 1934917632, while the sum is 70.

The spelling of 6664368634666 in words is "six trillion, six hundred sixty-four billion, three hundred sixty-eight million, six hundred thirty-four thousand, six hundred sixty-six".