26448169109 has 2 divisors, whose sum is σ = 26448169110. Its totient is φ = 26448169108.

The previous prime is 26448169091. The next prime is 26448169133. The reversal of 26448169109 is 90196184462.

Together with previous prime (26448169091) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25540834225 + 907334884 = 159815^2 + 30122^2 .

It is a cyclic number.

It is not a de Polignac number, because 26448169109 - 2²⁴ = 26431391893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26448169199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13224084554 + 13224084555.

It is an arithmetic number, because the mean of its divisors is an integer number (13224084555).

Almost surely, 2^26448169109 is an apocalyptic number.

It is an amenable number.

26448169109 is a deficient number, since it is larger than the sum of its proper divisors (1).

26448169109 is an equidigital number, since it uses as much as digits as its factorization.

26448169109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 746496, while the sum is 50.

The spelling of 26448169109 in words is "twenty-six billion, four hundred forty-eight million, one hundred sixty-nine thousand, one hundred nine".