28550471999 has 8 divisors (see below), whose sum is σ = 34346432640. Its totient is φ = 23183841816.

The previous prime is 28550471953. The next prime is 28550472017. The reversal of 28550471999 is 99917405582.

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

It is a cyclic number.

It is not a de Polignac number, because 28550471999 - 2⁸ = 28550471743 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 (28550471099) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107332469 + ... + 107332734.

It is an arithmetic number, because the mean of its divisors is an integer number (4293304080).

Almost surely, 2^28550471999 is an apocalyptic number.

28550471999 is a deficient number, since it is larger than the sum of its proper divisors (5795960641).

28550471999 is a wasteful number, since it uses less digits than its factorization.

28550471999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214665229.

The product of its (nonzero) digits is 8164800, while the sum is 59.

The spelling of 28550471999 in words is "twenty-eight billion, five hundred fifty million, four hundred seventy-one thousand, nine hundred ninety-nine".