28604616173 has 6 divisors (see below), whose sum is σ = 33274757646. Its totient is φ = 24518242392.

The previous prime is 28604616151. The next prime is 28604616179. The reversal of 28604616173 is 37161640682.

It can be written as a sum of positive squares in only one way, i.e., 22035027364 + 6569588809 = 148442^2 + 81053^2 .

It is not a de Polignac number, because 28604616173 - 2¹² = 28604612077 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 (28604616179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 291883790 + ... + 291883887.

It is an arithmetic number, because the mean of its divisors is an integer number (5545792941).

Almost surely, 2^28604616173 is an apocalyptic number.

It is an amenable number.

28604616173 is a deficient number, since it is larger than the sum of its proper divisors (4670141473).

28604616173 is an equidigital number, since it uses as much as digits as its factorization.

28604616173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 583767691 (or 583767684 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 44.

The spelling of 28604616173 in words is "twenty-eight billion, six hundred four million, six hundred sixteen thousand, one hundred seventy-three".