26871081589 has 4 divisors (see below), whose sum is σ = 29313907200. Its totient is φ = 24428255980.

The previous prime is 26871081577. The next prime is 26871081617. The reversal of 26871081589 is 98518017862.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 26871081589 - 2⁵ = 26871081557 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 (26871081529) 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, 1221412789 + ... + 1221412810.

It is an arithmetic number, because the mean of its divisors is an integer number (7328476800).

Almost surely, 2^26871081589 is an apocalyptic number.

It is an amenable number.

26871081589 is a deficient number, since it is larger than the sum of its proper divisors (2442825611).

26871081589 is a wasteful number, since it uses less digits than its factorization.

26871081589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2442825610.

The product of its (nonzero) digits is 1935360, while the sum is 55.

The spelling of 26871081589 in words is "twenty-six billion, eight hundred seventy-one million, eighty-one thousand, five hundred eighty-nine".