26265203317 has 2 divisors, whose sum is σ = 26265203318. Its totient is φ = 26265203316.

The previous prime is 26265203249. The next prime is 26265203323. The reversal of 26265203317 is 71330256262.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24885378001 + 1379825316 = 157751^2 + 37146^2 .

It is a cyclic number.

It is not a de Polignac number, because 26265203317 - 2¹⁵ = 26265170549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26265203347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13132601658 + 13132601659.

It is an arithmetic number, because the mean of its divisors is an integer number (13132601659).

Almost surely, 2^26265203317 is an apocalyptic number.

It is an amenable number.

26265203317 is a deficient number, since it is larger than the sum of its proper divisors (1).

26265203317 is an equidigital number, since it uses as much as digits as its factorization.

26265203317 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90720, while the sum is 37.

Adding to 26265203317 its reverse (71330256262), we get a palindrome (97595459579).

The spelling of 26265203317 in words is "twenty-six billion, two hundred sixty-five million, two hundred three thousand, three hundred seventeen".