1065065565671 has 2 divisors, whose sum is σ = 1065065565672. Its totient is φ = 1065065565670.

The previous prime is 1065065565647. The next prime is 1065065565689. The reversal of 1065065565671 is 1765655605601.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1065065565671 is a prime.

It is a super-2 number, since 2×1065065565671² (a number of 25 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1065065465671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 532532782835 + 532532782836.

It is an arithmetic number, because the mean of its divisors is an integer number (532532782836).

Almost surely, 2^{1065065565671} is an apocalyptic number.

1065065565671 is a deficient number, since it is larger than the sum of its proper divisors (1).

1065065565671 is an equidigital number, since it uses as much as digits as its factorization.

1065065565671 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5670000, while the sum is 53.

The spelling of 1065065565671 in words is "one trillion, sixty-five billion, sixty-five million, five hundred sixty-five thousand, six hundred seventy-one".