6665671940089 has 16 divisors (see below), whose sum is σ = 7143283933632. Its totient is φ = 6197571629568.

The previous prime is 6665671940077. The next prime is 6665671940119. The reversal of 6665671940089 is 9800491765666.

It is a cyclic number.

It is not a de Polignac number, because 6665671940089 - 2¹¹ = 6665671938041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6665671940009) 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 15 ways as a sum of consecutive naturals, for example, 21921277 + ... + 22223269.

It is an arithmetic number, because the mean of its divisors is an integer number (446455245852).

Almost surely, 2^{6665671940089} is an apocalyptic number.

It is an amenable number.

6665671940089 is a deficient number, since it is larger than the sum of its proper divisors (477611993543).

6665671940089 is a wasteful number, since it uses less digits than its factorization.

6665671940089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317736.

The product of its (nonzero) digits is 117573120, while the sum is 67.

The spelling of 6665671940089 in words is "six trillion, six hundred sixty-five billion, six hundred seventy-one million, nine hundred forty thousand, eighty-nine".