3665005895669 has 2 divisors, whose sum is σ = 3665005895670. Its totient is φ = 3665005895668.

The previous prime is 3665005895597. The next prime is 3665005895671. The reversal of 3665005895669 is 9665985005663.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3220183593169 + 444822302500 = 1794487^2 + 666950^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3665005895669 is a prime.

It is a super-2 number, since 2×3665005895669² (a number of 26 digits) contains 22 as substring.

Together with 3665005895671, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 3665005895599 and 3665005895608.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3665005891669) 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, 1832502947834 + 1832502947835.

It is an arithmetic number, because the mean of its divisors is an integer number (1832502947835).

Almost surely, 2^{3665005895669} is an apocalyptic number.

It is an amenable number.

3665005895669 is a deficient number, since it is larger than the sum of its proper divisors (1).

3665005895669 is an equidigital number, since it uses as much as digits as its factorization.

3665005895669 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 314928000, while the sum is 68.

The spelling of 3665005895669 in words is "three trillion, six hundred sixty-five billion, five million, eight hundred ninety-five thousand, six hundred sixty-nine".