26688642255 has 48 divisors (see below), whose sum is σ = 50486436000. Its totient is φ = 12934656000.

The previous prime is 26688642229. The next prime is 26688642263. The reversal of 26688642255 is 55224688662.

It is not a de Polignac number, because 26688642255 - 2⁶ = 26688642191 is a prime.

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 1376871 + ... + 1396119.

It is an arithmetic number, because the mean of its divisors is an integer number (1051800750).

Almost surely, 2^26688642255 is an apocalyptic number.

26688642255 is a deficient number, since it is larger than the sum of its proper divisors (23797793745).

26688642255 is a wasteful number, since it uses less digits than its factorization.

26688642255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22072 (or 22069 counting only the distinct ones).

The product of its digits is 11059200, while the sum is 54.

The spelling of 26688642255 in words is "twenty-six billion, six hundred eighty-eight million, six hundred forty-two thousand, two hundred fifty-five".