18666311707307 has 16 divisors (see below), whose sum is σ = 20527291502592. Its totient is φ = 16832720509920.

The previous prime is 18666311707279. The next prime is 18666311707331. The reversal of 18666311707307 is 70370711366681.

It is a cyclic number.

It is not a de Polignac number, because 18666311707307 - 2⁶ = 18666311707243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18666311707007) 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, 6560888 + ... + 8965370.

It is an arithmetic number, because the mean of its divisors is an integer number (1282955718912).

Almost surely, 2^{18666311707307} is an apocalyptic number.

18666311707307 is a deficient number, since it is larger than the sum of its proper divisors (1860979795285).

18666311707307 is a wasteful number, since it uses less digits than its factorization.

18666311707307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2410178.

The product of its (nonzero) digits is 5334336, while the sum is 56.

The spelling of 18666311707307 in words is "eighteen trillion, six hundred sixty-six billion, three hundred eleven million, seven hundred seven thousand, three hundred seven".