263553424355297 has 2 divisors, whose sum is σ = 263553424355298. Its totient is φ = 263553424355296.

The previous prime is 263553424355279. The next prime is 263553424355303. The reversal of 263553424355297 is 792553424355362.

Together with previous prime (263553424355279) 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., 157590261822016 + 105963162533281 = 12553496^2 + 10293841^2 .

It is a cyclic number.

It is not a de Polignac number, because 263553424355297 - 2⁸ = 263553424355041 is a prime.

It is not a weakly prime, because it can be changed into another prime (263553424355597) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131776712177648 + 131776712177649.

It is an arithmetic number, because the mean of its divisors is an integer number (131776712177649).

Almost surely, 2^{263553424355297} is an apocalyptic number.

It is an amenable number.

263553424355297 is a deficient number, since it is larger than the sum of its proper divisors (1).

263553424355297 is an equidigital number, since it uses as much as digits as its factorization.

263553424355297 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 816480000, while the sum is 65.

Adding to 263553424355297 its sum of digits (65), we get a palindrome (263553424355362).

The spelling of 263553424355297 in words is "two hundred sixty-three trillion, five hundred fifty-three billion, four hundred twenty-four million, three hundred fifty-five thousand, two hundred ninety-seven".