26716866064 has 20 divisors (see below), whose sum is σ = 59158775104. Its totient is φ = 11450085408.

The previous prime is 26716866053. The next prime is 26716866149. The reversal of 26716866064 is 46066861762.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 119271612 + ... + 119271835.

Almost surely, 2^26716866064 is an apocalyptic number.

It is an amenable number.

26716866064 is an abundant number, since it is smaller than the sum of its proper divisors (32441909040).

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

26716866064 is a wasteful number, since it uses less digits than its factorization.

26716866064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238543462 (or 238543456 counting only the distinct ones).

The product of its (nonzero) digits is 3483648, while the sum is 52.

The spelling of 26716866064 in words is "twenty-six billion, seven hundred sixteen million, eight hundred sixty-six thousand, sixty-four".