28027527502609 has 4 divisors (see below), whose sum is σ = 28027557758704. Its totient is φ = 28027497246516.

The previous prime is 28027527502561. The next prime is 28027527502619. The reversal of 28027527502609 is 90620572572082.

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 28027527502609 - 2⁹ = 28027527502097 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 28027527502609.

It is not an unprimeable number, because it can be changed into a prime (28027527502619) 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, 13693167 + ... + 15606340.

It is an arithmetic number, because the mean of its divisors is an integer number (7006889439676).

Almost surely, 2^{28027527502609} is an apocalyptic number.

It is an amenable number.

28027527502609 is a deficient number, since it is larger than the sum of its proper divisors (30256095).

28027527502609 is an equidigital number, since it uses as much as digits as its factorization.

28027527502609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30256094.

The product of its (nonzero) digits is 8467200, while the sum is 55.

The spelling of 28027527502609 in words is "twenty-eight trillion, twenty-seven billion, five hundred twenty-seven million, five hundred two thousand, six hundred nine".