6670909566667 has 4 divisors (see below), whose sum is σ = 6796775784960. Its totient is φ = 6545043348376.

The previous prime is 6670909566613. The next prime is 6670909566677. The reversal of 6670909566667 is 7666659090766.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6670909566667 - 2¹⁹ = 6670909042379 is a prime.

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 6670909566667.

It is not an unprimeable number, because it can be changed into a prime (6670909566677) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62933109067 + ... + 62933109172.

It is an arithmetic number, because the mean of its divisors is an integer number (1699193946240).

Almost surely, 2^{6670909566667} is an apocalyptic number.

6670909566667 is a deficient number, since it is larger than the sum of its proper divisors (125866218293).

6670909566667 is a wasteful number, since it uses less digits than its factorization.

6670909566667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125866218292.

The product of its (nonzero) digits is 925888320, while the sum is 73.

The spelling of 6670909566667 in words is "six trillion, six hundred seventy billion, nine hundred nine million, five hundred sixty-six thousand, six hundred sixty-seven".