265334640647 has 2 divisors, whose sum is σ = 265334640648. Its totient is φ = 265334640646.

The previous prime is 265334640631. The next prime is 265334640661. The reversal of 265334640647 is 746046433562.

265334640647 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 265334640647 - 2⁴ = 265334640631 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 265334640595 and 265334640604.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (265334640947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132667320323 + 132667320324.

It is an arithmetic number, because the mean of its divisors is an integer number (132667320324).

Almost surely, 2^265334640647 is an apocalyptic number.

265334640647 is a deficient number, since it is larger than the sum of its proper divisors (1).

265334640647 is an equidigital number, since it uses as much as digits as its factorization.

265334640647 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8709120, while the sum is 50.

The spelling of 265334640647 in words is "two hundred sixty-five billion, three hundred thirty-four million, six hundred forty thousand, six hundred forty-seven".