28104545869 has 4 divisors (see below), whose sum is σ = 28165247296. Its totient is φ = 28043844444.

The previous prime is 28104545863. The next prime is 28104545881. The reversal of 28104545869 is 96854540182.

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 28104545869 - 2¹¹ = 28104543821 is a prime.

It is a super-3 number, since 3×28104545869³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28104545863) 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, 30350019 + ... + 30350944.

It is an arithmetic number, because the mean of its divisors is an integer number (7041311824).

Almost surely, 2^28104545869 is an apocalyptic number.

It is an amenable number.

28104545869 is a deficient number, since it is larger than the sum of its proper divisors (60701427).

28104545869 is an equidigital number, since it uses as much as digits as its factorization.

28104545869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60701426.

The product of its (nonzero) digits is 2764800, while the sum is 52.

The spelling of 28104545869 in words is "twenty-eight billion, one hundred four million, five hundred forty-five thousand, eight hundred sixty-nine".