26826880091 has 16 divisors (see below), whose sum is σ = 29810682720. Its totient is φ = 23937914880.

The previous prime is 26826880079. The next prime is 26826880111. The reversal of 26826880091 is 19008862862.

It is not a de Polignac number, because 26826880091 - 2³⁴ = 9647010907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26826880061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34115 + ... + 234131.

It is an arithmetic number, because the mean of its divisors is an integer number (1863167670).

Almost surely, 2^26826880091 is an apocalyptic number.

26826880091 is a deficient number, since it is larger than the sum of its proper divisors (2983802629).

26826880091 is a wasteful number, since it uses less digits than its factorization.

26826880091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200254.

The product of its (nonzero) digits is 663552, while the sum is 50.

The spelling of 26826880091 in words is "twenty-six billion, eight hundred twenty-six million, eight hundred eighty thousand, ninety-one".