26056071917 has 4 divisors (see below), whose sum is σ = 26348836860. Its totient is φ = 25763306976.

The previous prime is 26056071913. The next prime is 26056071941. The reversal of 26056071917 is 71917065062.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11030460676 + 15025611241 = 105026^2 + 122579^2 .

It is a cyclic number.

It is not a de Polignac number, because 26056071917 - 2² = 26056071913 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26056071913) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 146382338 + ... + 146382515.

It is an arithmetic number, because the mean of its divisors is an integer number (6587209215).

Almost surely, 2^26056071917 is an apocalyptic number.

It is an amenable number.

26056071917 is a deficient number, since it is larger than the sum of its proper divisors (292764943).

26056071917 is an equidigital number, since it uses as much as digits as its factorization.

26056071917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292764942.

The product of its (nonzero) digits is 158760, while the sum is 44.

The spelling of 26056071917 in words is "twenty-six billion, fifty-six million, seventy-one thousand, nine hundred seventeen".