65665105065727 has 2 divisors, whose sum is σ = 65665105065728. Its totient is φ = 65665105065726.

The previous prime is 65665105065667. The next prime is 65665105065751. The reversal of 65665105065727 is 72756050156656.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 65665105065727 - 2³⁵ = 65630745327359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65665105065787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32832552532863 + 32832552532864.

It is an arithmetic number, because the mean of its divisors is an integer number (32832552532864).

Almost surely, 2^{65665105065727} is an apocalyptic number.

65665105065727 is a deficient number, since it is larger than the sum of its proper divisors (1).

65665105065727 is an equidigital number, since it uses as much as digits as its factorization.

65665105065727 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 79380000, while the sum is 61.

The spelling of 65665105065727 in words is "sixty-five trillion, six hundred sixty-five billion, one hundred five million, sixty-five thousand, seven hundred twenty-seven".