265676340617 has 2 divisors, whose sum is σ = 265676340618. Its totient is φ = 265676340616.

The previous prime is 265676340599. The next prime is 265676340619. The reversal of 265676340617 is 716043676562.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 230458563721 + 35217776896 = 480061^2 + 187664^2 .

It is a cyclic number.

It is not a de Polignac number, because 265676340617 - 2¹² = 265676336521 is a prime.

Together with 265676340619, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (265676340619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132838170308 + 132838170309.

It is an arithmetic number, because the mean of its divisors is an integer number (132838170309).

Almost surely, 2^265676340617 is an apocalyptic number.

It is an amenable number.

265676340617 is a deficient number, since it is larger than the sum of its proper divisors (1).

265676340617 is an equidigital number, since it uses as much as digits as its factorization.

265676340617 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7620480, while the sum is 53.

The spelling of 265676340617 in words is "two hundred sixty-five billion, six hundred seventy-six million, three hundred forty thousand, six hundred seventeen".