28588555705 has 4 divisors (see below), whose sum is σ = 34306266852. Its totient is φ = 22870844560.

The previous prime is 28588555651. The next prime is 28588555717. The reversal of 28588555705 is 50755588582.

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 14628660601 + 13959895104 = 120949^2 + 118152^2 .

It is not a de Polignac number, because 28588555705 - 2²¹ = 28586458553 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28588555705.

It is an unprimeable number.

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, 2858855566 + ... + 2858855575.

It is an arithmetic number, because the mean of its divisors is an integer number (8576566713).

Almost surely, 2^28588555705 is an apocalyptic number.

It is an amenable number.

28588555705 is a deficient number, since it is larger than the sum of its proper divisors (5717711147).

28588555705 is an equidigital number, since it uses as much as digits as its factorization.

28588555705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5717711146.

The product of its (nonzero) digits is 22400000, while the sum is 58.

The spelling of 28588555705 in words is "twenty-eight billion, five hundred eighty-eight million, five hundred fifty-five thousand, seven hundred five".