26705331109 has 2 divisors, whose sum is σ = 26705331110. Its totient is φ = 26705331108.

The previous prime is 26705331101. The next prime is 26705331137. The reversal of 26705331109 is 90113350762.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23089714209 + 3615616900 = 151953^2 + 60130^2 .

It is a cyclic number.

It is not a de Polignac number, because 26705331109 - 2³ = 26705331101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26705331101) 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, 13352665554 + 13352665555.

It is an arithmetic number, because the mean of its divisors is an integer number (13352665555).

Almost surely, 2^26705331109 is an apocalyptic number.

It is an amenable number.

26705331109 is a deficient number, since it is larger than the sum of its proper divisors (1).

26705331109 is an equidigital number, since it uses as much as digits as its factorization.

26705331109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34020, while the sum is 37.

The spelling of 26705331109 in words is "twenty-six billion, seven hundred five million, three hundred thirty-one thousand, one hundred nine".