26991167885 has 16 divisors (see below), whose sum is σ = 36473697792. Its totient is φ = 18996715200.

The previous prime is 26991167857. The next prime is 26991167921. The reversal of 26991167885 is 58876119962.

It is not a de Polignac number, because 26991167885 - 2¹⁰ = 26991166861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7913594 + ... + 7917003.

It is an arithmetic number, because the mean of its divisors is an integer number (2279606112).

Almost surely, 2^26991167885 is an apocalyptic number.

It is an amenable number.

26991167885 is a deficient number, since it is larger than the sum of its proper divisors (9482529907).

26991167885 is a wasteful number, since it uses less digits than its factorization.

26991167885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15830644.

The product of its digits is 13063680, while the sum is 62.

The spelling of 26991167885 in words is "twenty-six billion, nine hundred ninety-one million, one hundred sixty-seven thousand, eight hundred eighty-five".