26686266377 has 2 divisors, whose sum is σ = 26686266378. Its totient is φ = 26686266376.

The previous prime is 26686266293. The next prime is 26686266379. The reversal of 26686266377 is 77366268662.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25780798096 + 905468281 = 160564^2 + 30091^2 .

It is a cyclic number.

It is not a de Polignac number, because 26686266377 - 2²⁸ = 26417830921 is a prime.

It is a super-2 number, since 2×26686266377² (a number of 22 digits) contains 22 as substring.

Together with 26686266379, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (26686266379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13343133188 + 13343133189.

It is an arithmetic number, because the mean of its divisors is an integer number (13343133189).

Almost surely, 2^26686266377 is an apocalyptic number.

It is an amenable number.

26686266377 is a deficient number, since it is larger than the sum of its proper divisors (1).

26686266377 is an equidigital number, since it uses as much as digits as its factorization.

26686266377 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36578304, while the sum is 59.

The spelling of 26686266377 in words is "twenty-six billion, six hundred eighty-six million, two hundred sixty-six thousand, three hundred seventy-seven".