26943642064 has 20 divisors (see below), whose sum is σ = 53887285120. Its totient is φ = 13037245920.

The previous prime is 26943642043. The next prime is 26943642079. The reversal of 26943642064 is 46024634962.

26943642064 is an admirable number.

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 3 ways as a sum of consecutive naturals, for example, 27160434 + ... + 27161425.

It is an arithmetic number, because the mean of its divisors is an integer number (2694364256).

Almost surely, 2^26943642064 is an apocalyptic number.

It is an amenable number.

26943642064 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

26943642064 is a wasteful number, since it uses less digits than its factorization.

26943642064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54321898 (or 54321892 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 46.

The spelling of 26943642064 in words is "twenty-six billion, nine hundred forty-three million, six hundred forty-two thousand, sixty-four".