18666701867017 has 8 divisors (see below), whose sum is σ = 19064001010176. Its totient is φ = 18269408360352.

The previous prime is 18666701867003. The next prime is 18666701867053. The reversal of 18666701867017 is 71076810766681.

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

It is a cyclic number.

It is not a de Polignac number, because 18666701867017 - 2³⁵ = 18632342128649 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 18666701867017.

It is not an unprimeable number, because it can be changed into a prime (18666701867087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5658093 + ... + 8327509.

It is an arithmetic number, because the mean of its divisors is an integer number (2383000126272).

Almost surely, 2^{18666701867017} is an apocalyptic number.

It is an amenable number.

18666701867017 is a deficient number, since it is larger than the sum of its proper divisors (397299143159).

18666701867017 is a wasteful number, since it uses less digits than its factorization.

18666701867017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2818247.

The product of its (nonzero) digits is 28449792, while the sum is 64.

The spelling of 18666701867017 in words is "eighteen trillion, six hundred sixty-six billion, seven hundred one million, eight hundred sixty-seven thousand, seventeen".