26209880817073 has 2 divisors, whose sum is σ = 26209880817074. Its totient is φ = 26209880817072.

The previous prime is 26209880817059. The next prime is 26209880817137. The reversal of 26209880817073 is 37071808890262.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24897774714289 + 1312106102784 = 4989767^2 + 1145472^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26209880817073 is a prime.

It is not a weakly prime, because it can be changed into another prime (26209880817173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13104940408536 + 13104940408537.

It is an arithmetic number, because the mean of its divisors is an integer number (13104940408537).

Almost surely, 2^{26209880817073} is an apocalyptic number.

It is an amenable number.

26209880817073 is a deficient number, since it is larger than the sum of its proper divisors (1).

26209880817073 is an equidigital number, since it uses as much as digits as its factorization.

26209880817073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16257024, while the sum is 61.

The spelling of 26209880817073 in words is "twenty-six trillion, two hundred nine billion, eight hundred eighty million, eight hundred seventeen thousand, seventy-three".