26317704121 has 2 divisors, whose sum is σ = 26317704122. Its totient is φ = 26317704120.

The previous prime is 26317704109. The next prime is 26317704167. The reversal of 26317704121 is 12140771362.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25077889600 + 1239814521 = 158360^2 + 35211^2 .

It is a cyclic number.

It is not a de Polignac number, because 26317704121 - 2²⁷ = 26183486393 is a prime.

It is not a weakly prime, because it can be changed into another prime (26317701121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13158852060 + 13158852061.

It is an arithmetic number, because the mean of its divisors is an integer number (13158852061).

Almost surely, 2^26317704121 is an apocalyptic number.

It is an amenable number.

26317704121 is a deficient number, since it is larger than the sum of its proper divisors (1).

26317704121 is an equidigital number, since it uses as much as digits as its factorization.

26317704121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14112, while the sum is 34.

The spelling of 26317704121 in words is "twenty-six billion, three hundred seventeen million, seven hundred four thousand, one hundred twenty-one".