28133335211 has 4 divisors (see below), whose sum is σ = 28133670672. Its totient is φ = 28132999752.

The previous prime is 28133335129. The next prime is 28133335277. The reversal of 28133335211 is 11253333182.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 28133335211 - 2³⁰ = 27059593387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28133385211) 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, 83666 + ... + 251528.

It is an arithmetic number, because the mean of its divisors is an integer number (7033417668).

Almost surely, 2^28133335211 is an apocalyptic number.

28133335211 is a deficient number, since it is larger than the sum of its proper divisors (335461).

28133335211 is a wasteful number, since it uses less digits than its factorization.

28133335211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335460.

The product of its digits is 12960, while the sum is 32.

Adding to 28133335211 its reverse (11253333182), we get a palindrome (39386668393).

The spelling of 28133335211 in words is "twenty-eight billion, one hundred thirty-three million, three hundred thirty-five thousand, two hundred eleven".