26522133122561 has 4 divisors (see below), whose sum is σ = 26522145270192. Its totient is φ = 26522120974932.

The previous prime is 26522133122543. The next prime is 26522133122627. The reversal of 26522133122561 is 16522133122562.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 26522133122561 - 2²⁶ = 26522066013697 is a prime.

It is a super-3 number, since 3×26522133122561³ (a number of 41 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26522133122761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1793255 + ... + 7500668.

It is an arithmetic number, because the mean of its divisors is an integer number (6630536317548).

Almost surely, 2^{26522133122561} is an apocalyptic number.

It is an amenable number.

26522133122561 is a deficient number, since it is larger than the sum of its proper divisors (12147631).

26522133122561 is an equidigital number, since it uses as much as digits as its factorization.

26522133122561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12147630.

The product of its digits is 259200, while the sum is 41.

Subtracting from 26522133122561 its reverse (16522133122562), we obtain a palindrome (9999999999999).

The spelling of 26522133122561 in words is "twenty-six trillion, five hundred twenty-two billion, one hundred thirty-three million, one hundred twenty-two thousand, five hundred sixty-one".