26228884181 has 4 divisors (see below), whose sum is σ = 26673441600. Its totient is φ = 25784326764.

The previous prime is 26228884177. The next prime is 26228884189. The reversal of 26228884181 is 18148882262.

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.

It is a cyclic number.

It is not a de Polignac number, because 26228884181 - 2² = 26228884177 is a prime.

It is a super-2 number, since 2×26228884181² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26228884189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 222278621 + ... + 222278738.

It is an arithmetic number, because the mean of its divisors is an integer number (6668360400).

Almost surely, 2^26228884181 is an apocalyptic number.

It is an amenable number.

26228884181 is a deficient number, since it is larger than the sum of its proper divisors (444557419).

26228884181 is an equidigital number, since it uses as much as digits as its factorization.

26228884181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444557418.

The product of its digits is 786432, while the sum is 50.

The spelling of 26228884181 in words is "twenty-six billion, two hundred twenty-eight million, eight hundred eighty-four thousand, one hundred eighty-one".