26491663179 has 6 divisors (see below), whose sum is σ = 38265735716. Its totient is φ = 17661108780.

The previous prime is 26491663169. The next prime is 26491663199. The reversal of 26491663179 is 97136619462.

26491663179 is a `hidden beast` number, since 26 + 491 + 6 + 63 + 1 + 79 = 666.

It is not a de Polignac number, because 26491663179 - 2¹² = 26491659083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26491663169) 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 5 ways as a sum of consecutive naturals, for example, 1471759057 + ... + 1471759074.

Almost surely, 2^26491663179 is an apocalyptic number.

26491663179 is a deficient number, since it is larger than the sum of its proper divisors (11774072537).

26491663179 is a wasteful number, since it uses less digits than its factorization.

26491663179 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2943518137 (or 2943518134 counting only the distinct ones).

The product of its digits is 2939328, while the sum is 54.

The spelling of 26491663179 in words is "twenty-six billion, four hundred ninety-one million, six hundred sixty-three thousand, one hundred seventy-nine".