18666700017 has 8 divisors (see below), whose sum is σ = 28444495296. Its totient is φ = 10666685712.

The previous prime is 18666700007. The next prime is 18666700033. The reversal of 18666700017 is 71000766681.

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

It is not a de Polignac number, because 18666700017 - 2¹⁰ = 18666698993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18666700007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 444445218 + ... + 444445259.

It is an arithmetic number, because the mean of its divisors is an integer number (3555561912).

Almost surely, 2^18666700017 is an apocalyptic number.

It is an amenable number.

18666700017 is a deficient number, since it is larger than the sum of its proper divisors (9777795279).

18666700017 is an equidigital number, since it uses as much as digits as its factorization.

18666700017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 888890487.

The product of its (nonzero) digits is 84672, while the sum is 42.

The spelling of 18666700017 in words is "eighteen billion, six hundred sixty-six million, seven hundred thousand, seventeen".