26123613317 has 2 divisors, whose sum is σ = 26123613318. Its totient is φ = 26123613316.

The previous prime is 26123613301. The next prime is 26123613389. The reversal of 26123613317 is 71331632162.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25933559521 + 190053796 = 161039^2 + 13786^2 .

It is a cyclic number.

It is not a de Polignac number, because 26123613317 - 2⁴ = 26123613301 is a prime.

It is a super-2 number, since 2×26123613317² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26123615317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13061806658 + 13061806659.

It is an arithmetic number, because the mean of its divisors is an integer number (13061806659).

Almost surely, 2^26123613317 is an apocalyptic number.

It is an amenable number.

26123613317 is a deficient number, since it is larger than the sum of its proper divisors (1).

26123613317 is an equidigital number, since it uses as much as digits as its factorization.

26123613317 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27216, while the sum is 35.

The spelling of 26123613317 in words is "twenty-six billion, one hundred twenty-three million, six hundred thirteen thousand, three hundred seventeen".