26144730169 has 2 divisors, whose sum is σ = 26144730170. Its totient is φ = 26144730168.

The previous prime is 26144730077. The next prime is 26144730179. The reversal of 26144730169 is 96103744162.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20427555625 + 5717174544 = 142925^2 + 75612^2 .

It is a cyclic number.

It is not a de Polignac number, because 26144730169 - 2⁷ = 26144730041 is a prime.

It is a super-2 number, since 2×26144730169² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (26144730179) 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, 13072365084 + 13072365085.

It is an arithmetic number, because the mean of its divisors is an integer number (13072365085).

Almost surely, 2^26144730169 is an apocalyptic number.

It is an amenable number.

26144730169 is a deficient number, since it is larger than the sum of its proper divisors (1).

26144730169 is an equidigital number, since it uses as much as digits as its factorization.

26144730169 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 217728, while the sum is 43.

The spelling of 26144730169 in words is "twenty-six billion, one hundred forty-four million, seven hundred thirty thousand, one hundred sixty-nine".