28509119433 has 12 divisors (see below), whose sum is σ = 41181348208. Its totient is φ = 19005383160.

The previous prime is 28509119383. The next prime is 28509119447. The reversal of 28509119433 is 33491190582.

It is a happy number.

28509119433 is a `hidden beast` number, since 28 + 509 + 1 + 1 + 94 + 33 = 666.

It is not a de Polignac number, because 28509119433 - 2¹² = 28509115337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28509119453) 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 11 ways as a sum of consecutive naturals, for example, 358698 + ... + 430908.

Almost surely, 2^28509119433 is an apocalyptic number.

It is an amenable number.

28509119433 is a deficient number, since it is larger than the sum of its proper divisors (12672228775).

28509119433 is a wasteful number, since it uses less digits than its factorization.

28509119433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116084 (or 116081 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The spelling of 28509119433 in words is "twenty-eight billion, five hundred nine million, one hundred nineteen thousand, four hundred thirty-three".