265287595384897 has 2 divisors, whose sum is σ = 265287595384898. Its totient is φ = 265287595384896.

The previous prime is 265287595384841. The next prime is 265287595384913. The reversal of 265287595384897 is 798483595782562.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 251439343071921 + 13848252312976 = 15856839^2 + 3721324^2 .

It is a cyclic number.

It is not a de Polignac number, because 265287595384897 - 2¹⁹ = 265287594860609 is a prime.

It is not a weakly prime, because it can be changed into another prime (265287595387897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132643797692448 + 132643797692449.

It is an arithmetic number, because the mean of its divisors is an integer number (132643797692449).

Almost surely, 2^{265287595384897} is an apocalyptic number.

It is an amenable number.

265287595384897 is a deficient number, since it is larger than the sum of its proper divisors (1).

265287595384897 is an equidigital number, since it uses as much as digits as its factorization.

265287595384897 is an evil number, because the sum of its binary digits is even.

The product of its digits is 73156608000, while the sum is 88.

The spelling of 265287595384897 in words is "two hundred sixty-five trillion, two hundred eighty-seven billion, five hundred ninety-five million, three hundred eighty-four thousand, eight hundred ninety-seven".