26223828789865 has 12 divisors (see below), whose sum is σ = 36606324270276. Its totient is φ = 17982054027168.

The previous prime is 26223828789863. The next prime is 26223828789877. The reversal of 26223828789865 is 56898782832262.

It can be written as a sum of positive squares in 2 ways, for example, as 6751828071184 + 19472000718681 = 2598428^2 + 4412709^2 .

It is not a de Polignac number, because 26223828789865 - 2¹ = 26223828789863 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 26223828789791 and 26223828789800.

It is not an unprimeable number, because it can be changed into a prime (26223828789863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 53518017694 + ... + 53518018183.

It is an arithmetic number, because the mean of its divisors is an integer number (3050527022523).

Almost surely, 2^{26223828789865} is an apocalyptic number.

It is an amenable number.

26223828789865 is a deficient number, since it is larger than the sum of its proper divisors (10382495480411).

26223828789865 is a wasteful number, since it uses less digits than its factorization.

26223828789865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107036035896 (or 107036035889 counting only the distinct ones).

The product of its digits is 2229534720, while the sum is 76.

The spelling of 26223828789865 in words is "twenty-six trillion, two hundred twenty-three billion, eight hundred twenty-eight million, seven hundred eighty-nine thousand, eight hundred sixty-five".