26513104534109 has 2 divisors, whose sum is σ = 26513104534110. Its totient is φ = 26513104534108.

The previous prime is 26513104534093. The next prime is 26513104534129. The reversal of 26513104534109 is 90143540131562.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25767014558884 + 746089975225 = 5076122^2 + 863765^2 .

It is a cyclic number.

It is not a de Polignac number, because 26513104534109 - 2⁴ = 26513104534093 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 26513104534109.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26513104534129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13256552267054 + 13256552267055.

It is an arithmetic number, because the mean of its divisors is an integer number (13256552267055).

Almost surely, 2^{26513104534109} is an apocalyptic number.

It is an amenable number.

26513104534109 is a deficient number, since it is larger than the sum of its proper divisors (1).

26513104534109 is an equidigital number, since it uses as much as digits as its factorization.

26513104534109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 388800, while the sum is 44.

The spelling of 26513104534109 in words is "twenty-six trillion, five hundred thirteen billion, one hundred four million, five hundred thirty-four thousand, one hundred nine".