26223196636 has 144 divisors (see below), whose sum is σ = 60061478400. Its totient is φ = 9781814016.

The previous prime is 26223196619. The next prime is 26223196661. The reversal of 26223196636 is 63669132262.

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 23645250 + ... + 23646358.

It is an arithmetic number, because the mean of its divisors is an integer number (417093600).

Almost surely, 2^26223196636 is an apocalyptic number.

26223196636 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26223196636, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30030739200).

26223196636 is an abundant number, since it is smaller than the sum of its proper divisors (33838281764).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

26223196636 is a wasteful number, since it uses less digits than its factorization.

26223196636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1428 (or 1413 counting only the distinct ones).

The product of its digits is 839808, while the sum is 46.

The spelling of 26223196636 in words is "twenty-six billion, two hundred twenty-three million, one hundred ninety-six thousand, six hundred thirty-six".