28550533385 has 8 divisors (see below), whose sum is σ = 37375243776. Its totient is φ = 20764024240.

The previous prime is 28550533339. The next prime is 28550533409. The reversal of 28550533385 is 58333505582.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28550533385 - 2⁸ = 28550533129 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 259550249 + ... + 259550358.

It is an arithmetic number, because the mean of its divisors is an integer number (4671905472).

Almost surely, 2^28550533385 is an apocalyptic number.

It is an amenable number.

28550533385 is a deficient number, since it is larger than the sum of its proper divisors (8824710391).

28550533385 is a wasteful number, since it uses less digits than its factorization.

28550533385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 519100623.

The product of its (nonzero) digits is 2160000, while the sum is 47.

The spelling of 28550533385 in words is "twenty-eight billion, five hundred fifty million, five hundred thirty-three thousand, three hundred eighty-five".