26042779221559 has 2 divisors, whose sum is σ = 26042779221560. Its totient is φ = 26042779221558.

The previous prime is 26042779221499. The next prime is 26042779221581. The reversal of 26042779221559 is 95512297724062.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 26042779221559 - 2⁹ = 26042779221047 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 26042779221497 and 26042779221506.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26042779221859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13021389610779 + 13021389610780.

It is an arithmetic number, because the mean of its divisors is an integer number (13021389610780).

Almost surely, 2^{26042779221559} is an apocalyptic number.

26042779221559 is a deficient number, since it is larger than the sum of its proper divisors (1).

26042779221559 is an equidigital number, since it uses as much as digits as its factorization.

26042779221559 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 38102400, while the sum is 61.

The spelling of 26042779221559 in words is "twenty-six trillion, forty-two billion, seven hundred seventy-nine million, two hundred twenty-one thousand, five hundred fifty-nine".