26311000817 has 2 divisors, whose sum is σ = 26311000818. Its totient is φ = 26311000816.

The previous prime is 26311000813. The next prime is 26311000841. The reversal of 26311000817 is 71800011362.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17690064016 + 8620936801 = 133004^2 + 92849^2 .

It is a cyclic number.

It is not a de Polignac number, because 26311000817 - 2² = 26311000813 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 26311000817.

It is not a weakly prime, because it can be changed into another prime (26311000813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13155500408 + 13155500409.

It is an arithmetic number, because the mean of its divisors is an integer number (13155500409).

Almost surely, 2^26311000817 is an apocalyptic number.

It is an amenable number.

26311000817 is a deficient number, since it is larger than the sum of its proper divisors (1).

26311000817 is an equidigital number, since it uses as much as digits as its factorization.

26311000817 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 29.

The spelling of 26311000817 in words is "twenty-six billion, three hundred eleven million, eight hundred seventeen", and thus it is an aban number.