28630775117 has 6 divisors (see below), whose sum is σ = 33305187438. Its totient is φ = 24540664344.

The previous prime is 28630775099. The next prime is 28630775137. The reversal of 28630775117 is 71157703682.

It can be written as a sum of positive squares in only one way, i.e., 27332686276 + 1298088841 = 165326^2 + 36029^2 .

It is not a de Polignac number, because 28630775117 - 2¹² = 28630771021 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 (28630775137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 292150718 + ... + 292150815.

It is an arithmetic number, because the mean of its divisors is an integer number (5550864573).

Almost surely, 2^28630775117 is an apocalyptic number.

It is an amenable number.

28630775117 is a deficient number, since it is larger than the sum of its proper divisors (4674412321).

28630775117 is an equidigital number, since it uses as much as digits as its factorization.

28630775117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 584301547 (or 584301540 counting only the distinct ones).

The product of its (nonzero) digits is 493920, while the sum is 47.

The spelling of 28630775117 in words is "twenty-eight billion, six hundred thirty million, seven hundred seventy-five thousand, one hundred seventeen".