26894794777 has 2 divisors, whose sum is σ = 26894794778. Its totient is φ = 26894794776.

The previous prime is 26894794757. The next prime is 26894794781. The reversal of 26894794777 is 77749749862.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17601063561 + 9293731216 = 132669^2 + 96404^2 .

It is a cyclic number.

It is not a de Polignac number, because 26894794777 - 2⁷ = 26894794649 is a prime.

It is not a weakly prime, because it can be changed into another prime (26894794757) 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, 13447397388 + 13447397389.

It is an arithmetic number, because the mean of its divisors is an integer number (13447397389).

Almost surely, 2^26894794777 is an apocalyptic number.

It is an amenable number.

26894794777 is a deficient number, since it is larger than the sum of its proper divisors (1).

26894794777 is an equidigital number, since it uses as much as digits as its factorization.

26894794777 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 298722816, while the sum is 70.

The spelling of 26894794777 in words is "twenty-six billion, eight hundred ninety-four million, seven hundred ninety-four thousand, seven hundred seventy-seven".