26171902805 has 16 divisors (see below), whose sum is σ = 31885480704. Its totient is φ = 20618262720.

The previous prime is 26171902793. The next prime is 26171902843. The reversal of 26171902805 is 50820917162.

It is not a de Polignac number, because 26171902805 - 2⁴ = 26171902789 is a prime.

It is a Duffinian number.

It is a Curzon 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, 1175204 + ... + 1197266.

It is an arithmetic number, because the mean of its divisors is an integer number (1992842544).

Almost surely, 2^26171902805 is an apocalyptic number.

It is an amenable number.

26171902805 is a deficient number, since it is larger than the sum of its proper divisors (5713577899).

26171902805 is a wasteful number, since it uses less digits than its factorization.

26171902805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25676.

The product of its (nonzero) digits is 60480, while the sum is 41.

The spelling of 26171902805 in words is "twenty-six billion, one hundred seventy-one million, nine hundred two thousand, eight hundred five".