265206257456797 has 2 divisors, whose sum is σ = 265206257456798. Its totient is φ = 265206257456796.

The previous prime is 265206257456779. The next prime is 265206257456809. The reversal of 265206257456797 is 797654752602562.

Together with previous prime (265206257456779) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 196912908544356 + 68293348912441 = 14032566^2 + 8263979^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-265206257456797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (265206257466797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132603128728398 + 132603128728399.

It is an arithmetic number, because the mean of its divisors is an integer number (132603128728399).

Almost surely, 2^{265206257456797} is an apocalyptic number.

It is an amenable number.

265206257456797 is a deficient number, since it is larger than the sum of its proper divisors (1).

265206257456797 is an equidigital number, since it uses as much as digits as its factorization.

265206257456797 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2667168000, while the sum is 73.

The spelling of 265206257456797 in words is "two hundred sixty-five trillion, two hundred six billion, two hundred fifty-seven million, four hundred fifty-six thousand, seven hundred ninety-seven".