26668486808028 has 72 divisors (see below), whose sum is σ = 75753962557728. Its totient is φ = 7848919191168.

The previous prime is 26668486808021. The next prime is 26668486808123. The reversal of 26668486808028 is 82080868486662.

It is a super-2 number, since 2×26668486808028² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26668486808021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1238770675 + ... + 1238792202.

Almost surely, 2^{26668486808028} is an apocalyptic number.

It is an amenable number.

26668486808028 is an abundant number, since it is smaller than the sum of its proper divisors (49085475749700).

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

26668486808028 is a wasteful number, since it uses less digits than its factorization.

26668486808028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2477562923 (or 2477562918 counting only the distinct ones).

The product of its (nonzero) digits is 679477248, while the sum is 72.

The spelling of 26668486808028 in words is "twenty-six trillion, six hundred sixty-eight billion, four hundred eighty-six million, eight hundred eight thousand, twenty-eight".