26328810931589 has 2 divisors, whose sum is σ = 26328810931590. Its totient is φ = 26328810931588.

The previous prime is 26328810931561. The next prime is 26328810931613. The reversal of 26328810931589 is 98513901882362.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14803702563364 + 11525108368225 = 3847558^2 + 3394865^2 .

It is a cyclic number.

It is not a de Polignac number, because 26328810931589 - 2³⁶ = 26260091454853 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26328810961589) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13164405465794 + 13164405465795.

It is an arithmetic number, because the mean of its divisors is an integer number (13164405465795).

Almost surely, 2^{26328810931589} is an apocalyptic number.

It is an amenable number.

26328810931589 is a deficient number, since it is larger than the sum of its proper divisors (1).

26328810931589 is an equidigital number, since it uses as much as digits as its factorization.

26328810931589 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 44789760, while the sum is 65.

The spelling of 26328810931589 in words is "twenty-six trillion, three hundred twenty-eight billion, eight hundred ten million, nine hundred thirty-one thousand, five hundred eighty-nine".