3865340067361 has 2 divisors, whose sum is σ = 3865340067362. Its totient is φ = 3865340067360.

The previous prime is 3865340067359. The next prime is 3865340067467. The reversal of 3865340067361 is 1637600435683.

3865340067361 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3517759073761 + 347580993600 = 1875569^2 + 589560^2 .

It is a cyclic number.

It is not a de Polignac number, because 3865340067361 - 2¹ = 3865340067359 is a prime.

Together with 3865340067359, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 3865340067299 and 3865340067308.

It is not a weakly prime, because it can be changed into another prime (3865340067661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1932670033680 + 1932670033681.

It is an arithmetic number, because the mean of its divisors is an integer number (1932670033681).

Almost surely, 2^{3865340067361} is an apocalyptic number.

It is an amenable number.

3865340067361 is a deficient number, since it is larger than the sum of its proper divisors (1).

3865340067361 is an equidigital number, since it uses as much as digits as its factorization.

3865340067361 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6531840, while the sum is 52.

The spelling of 3865340067361 in words is "three trillion, eight hundred sixty-five billion, three hundred forty million, sixty-seven thousand, three hundred sixty-one".