26317381121 has 4 divisors (see below), whose sum is σ = 26323573332. Its totient is φ = 26311188912.

The previous prime is 26317381093. The next prime is 26317381141. The reversal of 26317381121 is 12118371362.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4799718400 + 21517662721 = 69280^2 + 146689^2 .

It is a cyclic number.

It is not a de Polignac number, because 26317381121 - 2¹⁸ = 26317118977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26317381141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3089726 + ... + 3098231.

It is an arithmetic number, because the mean of its divisors is an integer number (6580893333).

Almost surely, 2^26317381121 is an apocalyptic number.

It is an amenable number.

26317381121 is a deficient number, since it is larger than the sum of its proper divisors (6192211).

26317381121 is an equidigital number, since it uses as much as digits as its factorization.

26317381121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6192210.

The product of its digits is 12096, while the sum is 35.

The spelling of 26317381121 in words is "twenty-six billion, three hundred seventeen million, three hundred eighty-one thousand, one hundred twenty-one".