26626778805 has 32 divisors (see below), whose sum is σ = 48496527360. Its totient is φ = 12348649280.

The previous prime is 26626778791. The next prime is 26626778813. The reversal of 26626778805 is 50887762662.

It is a happy number.

It is not a de Polignac number, because 26626778805 - 2⁶ = 26626778741 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 (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3504345 + ... + 3511934.

It is an arithmetic number, because the mean of its divisors is an integer number (1515516480).

Almost surely, 2^26626778805 is an apocalyptic number.

It is an amenable number.

26626778805 is a deficient number, since it is larger than the sum of its proper divisors (21869748555).

26626778805 is a wasteful number, since it uses less digits than its factorization.

26626778805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7016321.

The product of its (nonzero) digits is 13547520, while the sum is 57.

The spelling of 26626778805 in words is "twenty-six billion, six hundred twenty-six million, seven hundred seventy-eight thousand, eight hundred five".