666044522560727 has 2 divisors, whose sum is σ = 666044522560728. Its totient is φ = 666044522560726.

The previous prime is 666044522560709. The next prime is 666044522560751. The reversal of 666044522560727 is 727065225440666.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 666044522560727 - 2³⁰ = 666043448818903 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 666044522560727.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (666044522560757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333022261280363 + 333022261280364.

It is an arithmetic number, because the mean of its divisors is an integer number (333022261280364).

Almost surely, 2^{666044522560727} is an apocalyptic number.

666044522560727 is a deficient number, since it is larger than the sum of its proper divisors (1).

666044522560727 is an equidigital number, since it uses as much as digits as its factorization.

666044522560727 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 203212800, while the sum is 62.

The spelling of 666044522560727 in words is "six hundred sixty-six trillion, forty-four billion, five hundred twenty-two million, five hundred sixty thousand, seven hundred twenty-seven".