26563150717 has 2 divisors, whose sum is σ = 26563150718. Its totient is φ = 26563150716.

The previous prime is 26563150703. The next prime is 26563150771. The reversal of 26563150717 is 71705136562.

Together with next prime (26563150771) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26328632121 + 234518596 = 162261^2 + 15314^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26563150717 is a prime.

It is a super-2 number, since 2×26563150717² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26563150217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13281575358 + 13281575359.

It is an arithmetic number, because the mean of its divisors is an integer number (13281575359).

Almost surely, 2^26563150717 is an apocalyptic number.

It is an amenable number.

26563150717 is a deficient number, since it is larger than the sum of its proper divisors (1).

26563150717 is an equidigital number, since it uses as much as digits as its factorization.

26563150717 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 264600, while the sum is 43.

The spelling of 26563150717 in words is "twenty-six billion, five hundred sixty-three million, one hundred fifty thousand, seven hundred seventeen".