26368388386309 has 2 divisors, whose sum is σ = 26368388386310. Its totient is φ = 26368388386308.

The previous prime is 26368388386279. The next prime is 26368388386369. The reversal of 26368388386309 is 90368388386362.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26256349569025 + 112038817284 = 5124095^2 + 334722^2 .

It is a cyclic number.

It is not a de Polignac number, because 26368388386309 - 2²⁵ = 26368354831877 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26368388386369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13184194193154 + 13184194193155.

It is an arithmetic number, because the mean of its divisors is an integer number (13184194193155).

Almost surely, 2^{26368388386309} is an apocalyptic number.

It is an amenable number.

26368388386309 is a deficient number, since it is larger than the sum of its proper divisors (1).

26368388386309 is an equidigital number, since it uses as much as digits as its factorization.

26368388386309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1289945088, while the sum is 73.

The spelling of 26368388386309 in words is "twenty-six trillion, three hundred sixty-eight billion, three hundred eighty-eight million, three hundred eighty-six thousand, three hundred nine".