28086058817 has 4 divisors (see below), whose sum is σ = 28348545456. Its totient is φ = 27823572180.

The previous prime is 28086058733. The next prime is 28086058843. The reversal of 28086058817 is 71885068082.

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 28086058817 - 2¹² = 28086054721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28086057817) 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 3 ways as a sum of consecutive naturals, for example, 131243159 + ... + 131243372.

It is an arithmetic number, because the mean of its divisors is an integer number (7087136364).

Almost surely, 2^28086058817 is an apocalyptic number.

It is an amenable number.

28086058817 is a deficient number, since it is larger than the sum of its proper divisors (262486639).

28086058817 is a wasteful number, since it uses less digits than its factorization.

28086058817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262486638.

The product of its (nonzero) digits is 1720320, while the sum is 53.

The spelling of 28086058817 in words is "twenty-eight billion, eighty-six million, fifty-eight thousand, eight hundred seventeen".