26556044868 has 72 divisors (see below), whose sum is σ = 70742453600. Its totient is φ = 8376431616.

The previous prime is 26556044863. The next prime is 26556044873. The reversal of 26556044868 is 86844065562.

26556044868 is a `hidden beast` number, since 2 + 6 + 556 + 0 + 4 + 4 + 86 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (26556044863) and next prime (26556044873).

It is not an unprimeable number, because it can be changed into a prime (26556044863) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 581988 + ... + 625956.

Almost surely, 2^26556044868 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26556044868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35371226800).

26556044868 is an abundant number, since it is smaller than the sum of its proper divisors (44186408732).

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

26556044868 is a wasteful number, since it uses less digits than its factorization.

26556044868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44881 (or 44876 counting only the distinct ones).

The product of its (nonzero) digits is 11059200, while the sum is 54.

The spelling of 26556044868 in words is "twenty-six billion, five hundred fifty-six million, forty-four thousand, eight hundred sixty-eight".