65665105065667 has 2 divisors, whose sum is σ = 65665105065668. Its totient is φ = 65665105065666.

The previous prime is 65665105065629. The next prime is 65665105065727. The reversal of 65665105065667 is 76656050156656.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 65665105065667 - 2²⁷ = 65664970847939 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 65665105065599 and 65665105065608.

It is not a weakly prime, because it can be changed into another prime (65665105065467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32832552532833 + 32832552532834.

It is an arithmetic number, because the mean of its divisors is an integer number (32832552532834).

Almost surely, 2^{65665105065667} is an apocalyptic number.

65665105065667 is a deficient number, since it is larger than the sum of its proper divisors (1).

65665105065667 is an equidigital number, since it uses as much as digits as its factorization.

65665105065667 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 204120000, while the sum is 64.

The spelling of 65665105065667 in words is "sixty-five trillion, six hundred sixty-five billion, one hundred five million, sixty-five thousand, six hundred sixty-seven".