26809012229 has 2 divisors, whose sum is σ = 26809012230. Its totient is φ = 26809012228.

The previous prime is 26809012211. The next prime is 26809012231. The reversal of 26809012229 is 92221090862.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14225332900 + 12583679329 = 119270^2 + 112177^2 .

It is a cyclic number.

It is not a de Polignac number, because 26809012229 - 2²⁰ = 26807963653 is a prime.

Together with 26809012231, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26809012259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13404506114 + 13404506115.

It is an arithmetic number, because the mean of its divisors is an integer number (13404506115).

Almost surely, 2^26809012229 is an apocalyptic number.

It is an amenable number.

26809012229 is a deficient number, since it is larger than the sum of its proper divisors (1).

26809012229 is an equidigital number, since it uses as much as digits as its factorization.

26809012229 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 62208, while the sum is 41.

The spelling of 26809012229 in words is "twenty-six billion, eight hundred nine million, twelve thousand, two hundred twenty-nine".