26205895871 has 4 divisors (see below), whose sum is σ = 27345282672. Its totient is φ = 25066509072.

The previous prime is 26205895853. The next prime is 26205895927. The reversal of 26205895871 is 17859850262.

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

It is a cyclic number.

It is not a de Polignac number, because 26205895871 - 2²² = 26201701567 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 (26205895801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 569693366 + ... + 569693411.

It is an arithmetic number, because the mean of its divisors is an integer number (6836320668).

Almost surely, 2^26205895871 is an apocalyptic number.

26205895871 is a deficient number, since it is larger than the sum of its proper divisors (1139386801).

26205895871 is a wasteful number, since it uses less digits than its factorization.

26205895871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1139386800.

The product of its (nonzero) digits is 2419200, while the sum is 53.

The spelling of 26205895871 in words is "twenty-six billion, two hundred five million, eight hundred ninety-five thousand, eight hundred seventy-one".