26566320679983 has 24 divisors (see below), whose sum is σ = 44307632209568. Its totient is φ = 15024252045312.

The previous prime is 26566320679967. The next prime is 26566320679991. The reversal of 26566320679983 is 38997602366562.

26566320679983 is a `hidden beast` number, since 26 + 5 + 66 + 320 + 67 + 99 + 83 = 666.

It is not a de Polignac number, because 26566320679983 - 2⁴ = 26566320679967 is a prime.

It is a Smith number, since the sum of its digits (72) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26566320679183) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2173641466 + ... + 2173653687.

Almost surely, 2^{26566320679983} is an apocalyptic number.

26566320679983 is a deficient number, since it is larger than the sum of its proper divisors (17741311529585).

26566320679983 is a wasteful number, since it uses less digits than its factorization.

26566320679983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4347295263 (or 4347295260 counting only the distinct ones).

The product of its (nonzero) digits is 1058158080, while the sum is 72.

The spelling of 26566320679983 in words is "twenty-six trillion, five hundred sixty-six billion, three hundred twenty million, six hundred seventy-nine thousand, nine hundred eighty-three".