28468761533 has 4 divisors (see below), whose sum is σ = 28554770208. Its totient is φ = 28382752860.

The previous prime is 28468761521. The next prime is 28468761547. The reversal of 28468761533 is 33516786482.

It is a happy number.

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 28468761533 - 2³⁰ = 27395019709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28468766533) 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, 43003841 + ... + 43004502.

It is an arithmetic number, because the mean of its divisors is an integer number (7138692552).

Almost surely, 2^28468761533 is an apocalyptic number.

It is an amenable number.

28468761533 is a deficient number, since it is larger than the sum of its proper divisors (86008675).

28468761533 is an equidigital number, since it uses as much as digits as its factorization.

28468761533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86008674.

The product of its digits is 5806080, while the sum is 53.

The spelling of 28468761533 in words is "twenty-eight billion, four hundred sixty-eight million, seven hundred sixty-one thousand, five hundred thirty-three".