26200066282661 has 2 divisors, whose sum is σ = 26200066282662. Its totient is φ = 26200066282660.

The previous prime is 26200066282631. The next prime is 26200066282667. The reversal of 26200066282661 is 16628266000262.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17867064033025 + 8333002249636 = 4226945^2 + 2886694^2 .

It is a cyclic number.

It is not a de Polignac number, because 26200066282661 - 2¹⁰ = 26200066281637 is a prime.

It is a super-2 number, since 2×26200066282661² (a number of 28 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26200066282667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13100033141330 + 13100033141331.

It is an arithmetic number, because the mean of its divisors is an integer number (13100033141331).

Almost surely, 2^{26200066282661} is an apocalyptic number.

It is an amenable number.

26200066282661 is a deficient number, since it is larger than the sum of its proper divisors (1).

26200066282661 is an equidigital number, since it uses as much as digits as its factorization.

26200066282661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 995328, while the sum is 47.

The spelling of 26200066282661 in words is "twenty-six trillion, two hundred billion, sixty-six million, two hundred eighty-two thousand, six hundred sixty-one".