666044510607107 has 4 divisors (see below), whose sum is σ = 666237176075016. Its totient is φ = 665851845139200.

The previous prime is 666044510607053. The next prime is 666044510607163. The reversal of 666044510607107 is 701706015440666.

It is a happy number.

666044510607107 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 666044510607107 - 2⁸ = 666044510606851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (666044510607167) 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, 96332728769 + ... + 96332735682.

It is an arithmetic number, because the mean of its divisors is an integer number (166559294018754).

Almost surely, 2^{666044510607107} is an apocalyptic number.

666044510607107 is a deficient number, since it is larger than the sum of its proper divisors (192665467909).

666044510607107 is a wasteful number, since it uses less digits than its factorization.

666044510607107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192665467908.

The product of its (nonzero) digits is 5080320, while the sum is 53.

The spelling of 666044510607107 in words is "six hundred sixty-six trillion, forty-four billion, five hundred ten million, six hundred seven thousand, one hundred seven".