26873028989909 has 2 divisors, whose sum is σ = 26873028989910. Its totient is φ = 26873028989908.

The previous prime is 26873028989893. The next prime is 26873028989921. The reversal of 26873028989909 is 90998982037862.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17038344829009 + 9834684160900 = 4127753^2 + 3136030^2 .

It is a cyclic number.

It is not a de Polignac number, because 26873028989909 - 2⁴ = 26873028989893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26873028989309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13436514494954 + 13436514494955.

It is an arithmetic number, because the mean of its divisors is an integer number (13436514494955).

Almost surely, 2^{26873028989909} is an apocalyptic number.

It is an amenable number.

26873028989909 is a deficient number, since it is larger than the sum of its proper divisors (1).

26873028989909 is an equidigital number, since it uses as much as digits as its factorization.

26873028989909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1693052928, while the sum is 80.

The spelling of 26873028989909 in words is "twenty-six trillion, eight hundred seventy-three billion, twenty-eight million, nine hundred eighty-nine thousand, nine hundred nine".