26258649238069 has 2 divisors, whose sum is σ = 26258649238070. Its totient is φ = 26258649238068.

The previous prime is 26258649238061. The next prime is 26258649238109. The reversal of 26258649238069 is 96083294685262.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26007317469169 + 251331768900 = 5099737^2 + 501330^2 .

It is a cyclic number.

It is not a de Polignac number, because 26258649238069 - 2³ = 26258649238061 is a prime.

It is a super-2 number, since 2×26258649238069² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 26258649237989 and 26258649238007.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26258649238061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13129324619034 + 13129324619035.

It is an arithmetic number, because the mean of its divisors is an integer number (13129324619035).

Almost surely, 2^{26258649238069} is an apocalyptic number.

It is an amenable number.

26258649238069 is a deficient number, since it is larger than the sum of its proper divisors (1).

26258649238069 is an equidigital number, since it uses as much as digits as its factorization.

26258649238069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 537477120, while the sum is 70.

The spelling of 26258649238069 in words is "twenty-six trillion, two hundred fifty-eight billion, six hundred forty-nine million, two hundred thirty-eight thousand, sixty-nine".