28917166853 has 4 divisors (see below), whose sum is σ = 29063954700. Its totient is φ = 28770379008.

The previous prime is 28917166847. The next prime is 28917166871. The reversal of 28917166853 is 35866171982.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 24310422724 + 4606744129 = 155918^2 + 67873^2 .

It is a cyclic number.

It is not a de Polignac number, because 28917166853 - 2¹⁰ = 28917165829 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28917162853) 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 3 ways as a sum of consecutive naturals, for example, 73393628 + ... + 73394021.

It is an arithmetic number, because the mean of its divisors is an integer number (7265988675).

Almost surely, 2^28917166853 is an apocalyptic number.

It is an amenable number.

28917166853 is a deficient number, since it is larger than the sum of its proper divisors (146787847).

28917166853 is a wasteful number, since it uses less digits than its factorization.

28917166853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146787846.

The product of its digits is 4354560, while the sum is 56.

The spelling of 28917166853 in words is "twenty-eight billion, nine hundred seventeen million, one hundred sixty-six thousand, eight hundred fifty-three".