26800828849 has 2 divisors, whose sum is σ = 26800828850. Its totient is φ = 26800828848.

The previous prime is 26800828843. The next prime is 26800828861. The reversal of 26800828849 is 94882800862.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21687863824 + 5112965025 = 147268^2 + 71505^2 .

It is a cyclic number.

It is not a de Polignac number, because 26800828849 - 2⁹ = 26800828337 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 26800828849.

It is not a weakly prime, because it can be changed into another prime (26800828843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13400414424 + 13400414425.

It is an arithmetic number, because the mean of its divisors is an integer number (13400414425).

Almost surely, 2^26800828849 is an apocalyptic number.

It is an amenable number.

26800828849 is a deficient number, since it is larger than the sum of its proper divisors (1).

26800828849 is an equidigital number, since it uses as much as digits as its factorization.

26800828849 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3538944, while the sum is 55.

The spelling of 26800828849 in words is "twenty-six billion, eight hundred million, eight hundred twenty-eight thousand, eight hundred forty-nine".