26544202091 has 12 divisors (see below), whose sum is σ = 29208555600. Its totient is φ = 24104733840.

The previous prime is 26544202051. The next prime is 26544202099. The reversal of 26544202091 is 19020244562.

It is a de Polignac number, because none of the positive numbers 2^k-26544202091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26544202099) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8156 + ... + 230553.

It is an arithmetic number, because the mean of its divisors is an integer number (2434046300).

Almost surely, 2^26544202091 is an apocalyptic number.

26544202091 is a deficient number, since it is larger than the sum of its proper divisors (2664353509).

26544202091 is a wasteful number, since it uses less digits than its factorization.

26544202091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239650 (or 239639 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 35.

The spelling of 26544202091 in words is "twenty-six billion, five hundred forty-four million, two hundred two thousand, ninety-one".