26643422688 has 96 divisors (see below), whose sum is σ = 72269955072. Its totient is φ = 8585740800.

The previous prime is 26643422671. The next prime is 26643422713. The reversal of 26643422688 is 88622434662.

It is a tau number, because it is divible by the number of its divisors (96).

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 26643422688.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3248673 + ... + 3256863.

It is an arithmetic number, because the mean of its divisors is an integer number (752812032).

Almost surely, 2^26643422688 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26643422688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36134977536).

26643422688 is an abundant number, since it is smaller than the sum of its proper divisors (45626532384).

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

26643422688 is a wasteful number, since it uses less digits than its factorization.

26643422688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9328 (or 9320 counting only the distinct ones).

The product of its digits is 5308416, while the sum is 51.

The spelling of 26643422688 in words is "twenty-six billion, six hundred forty-three million, four hundred twenty-two thousand, six hundred eighty-eight".