26684255969291 has 2 divisors, whose sum is σ = 26684255969292. Its totient is φ = 26684255969290.

The previous prime is 26684255969237. The next prime is 26684255969317. The reversal of 26684255969291 is 19296955248662.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 26684255969291 - 2⁶ = 26684255969227 is a prime.

It is a super-3 number, since 3×26684255969291³ (a number of 41 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (26684255969191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13342127984645 + 13342127984646.

It is an arithmetic number, because the mean of its divisors is an integer number (13342127984646).

Almost surely, 2^{26684255969291} is an apocalyptic number.

26684255969291 is a deficient number, since it is larger than the sum of its proper divisors (1).

26684255969291 is an equidigital number, since it uses as much as digits as its factorization.

26684255969291 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1007769600, while the sum is 74.

The spelling of 26684255969291 in words is "twenty-six trillion, six hundred eighty-four billion, two hundred fifty-five million, nine hundred sixty-nine thousand, two hundred ninety-one".