28336825617 has 4 divisors (see below), whose sum is σ = 37782434160. Its totient is φ = 18891217076.

The previous prime is 28336825603. The next prime is 28336825633. The reversal of 28336825617 is 71652863382.

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 28336825617 - 2⁶ = 28336825553 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28336825617.

It is not an unprimeable number, because it can be changed into a prime (28336825687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4722804267 + ... + 4722804272.

It is an arithmetic number, because the mean of its divisors is an integer number (9445608540).

Almost surely, 2^28336825617 is an apocalyptic number.

It is an amenable number.

28336825617 is a deficient number, since it is larger than the sum of its proper divisors (9445608543).

28336825617 is an equidigital number, since it uses as much as digits as its factorization.

28336825617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9445608542.

The product of its digits is 2903040, while the sum is 51.

The spelling of 28336825617 in words is "twenty-eight billion, three hundred thirty-six million, eight hundred twenty-five thousand, six hundred seventeen".