26120822821 has 2 divisors, whose sum is σ = 26120822822. Its totient is φ = 26120822820.

The previous prime is 26120822803. The next prime is 26120822879. The reversal of 26120822821 is 12822802162.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23769930625 + 2350892196 = 154175^2 + 48486^2 .

It is a cyclic number.

It is not a de Polignac number, because 26120822821 - 2³³ = 17530888229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26120822891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13060411410 + 13060411411.

It is an arithmetic number, because the mean of its divisors is an integer number (13060411411).

Almost surely, 2^26120822821 is an apocalyptic number.

It is an amenable number.

26120822821 is a deficient number, since it is larger than the sum of its proper divisors (1).

26120822821 is an equidigital number, since it uses as much as digits as its factorization.

26120822821 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12288, while the sum is 34.

The spelling of 26120822821 in words is "twenty-six billion, one hundred twenty million, eight hundred twenty-two thousand, eight hundred twenty-one".