26979748841 has 2 divisors, whose sum is σ = 26979748842. Its totient is φ = 26979748840.

The previous prime is 26979748793. The next prime is 26979748897. The reversal of 26979748841 is 14884797962.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14814541225 + 12165207616 = 121715^2 + 110296^2 .

It is a cyclic number.

It is not a de Polignac number, because 26979748841 - 2⁶ = 26979748777 is a prime.

It is not a weakly prime, because it can be changed into another prime (26979748141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13489874420 + 13489874421.

It is an arithmetic number, because the mean of its divisors is an integer number (13489874421).

Almost surely, 2^26979748841 is an apocalyptic number.

It is an amenable number.

26979748841 is a deficient number, since it is larger than the sum of its proper divisors (1).

26979748841 is an equidigital number, since it uses as much as digits as its factorization.

26979748841 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48771072, while the sum is 65.

The spelling of 26979748841 in words is "twenty-six billion, nine hundred seventy-nine million, seven hundred forty-eight thousand, eight hundred forty-one".