26568389668 has 24 divisors (see below), whose sum is σ = 48121230080. Its totient is φ = 12821729760.

The previous prime is 26568389657. The next prime is 26568389677. The reversal of 26568389668 is 86698386562.

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 7 ways as a sum of consecutive naturals, for example, 235671 + ... + 329662.

Almost surely, 2^26568389668 is an apocalyptic number.

It is an amenable number.

26568389668 is a deficient number, since it is larger than the sum of its proper divisors (21552840412).

26568389668 is a wasteful number, since it uses less digits than its factorization.

26568389668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 565747 (or 565745 counting only the distinct ones).

The product of its digits is 179159040, while the sum is 67.

The spelling of 26568389668 in words is "twenty-six billion, five hundred sixty-eight million, three hundred eighty-nine thousand, six hundred sixty-eight".