26332109509 has 2 divisors, whose sum is σ = 26332109510. Its totient is φ = 26332109508.

The previous prime is 26332109491. The next prime is 26332109549. The reversal of 26332109509 is 90590123362.

It is an a-pointer prime, because the next prime (26332109549) can be obtained adding 26332109509 to its sum of digits (40).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15744728484 + 10587381025 = 125478^2 + 102895^2 .

It is a cyclic number.

It is not a de Polignac number, because 26332109509 - 2⁷ = 26332109381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26332109549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13166054754 + 13166054755.

It is an arithmetic number, because the mean of its divisors is an integer number (13166054755).

Almost surely, 2^26332109509 is an apocalyptic number.

It is an amenable number.

26332109509 is a deficient number, since it is larger than the sum of its proper divisors (1).

26332109509 is an equidigital number, since it uses as much as digits as its factorization.

26332109509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 87480, while the sum is 40.

The spelling of 26332109509 in words is "twenty-six billion, three hundred thirty-two million, one hundred nine thousand, five hundred nine".