26568305969 has 2 divisors, whose sum is σ = 26568305970. Its totient is φ = 26568305968.

The previous prime is 26568305963. The next prime is 26568305977. The reversal of 26568305969 is 96950386562.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25710519025 + 857786944 = 160345^2 + 29288^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26568305969 is a prime.

It is a super-2 number, since 2×26568305969² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (26568305963) 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, 13284152984 + 13284152985.

It is an arithmetic number, because the mean of its divisors is an integer number (13284152985).

Almost surely, 2^26568305969 is an apocalyptic number.

It is an amenable number.

26568305969 is a deficient number, since it is larger than the sum of its proper divisors (1).

26568305969 is an equidigital number, since it uses as much as digits as its factorization.

26568305969 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20995200, while the sum is 59.

The spelling of 26568305969 in words is "twenty-six billion, five hundred sixty-eight million, three hundred five thousand, nine hundred sixty-nine".