28985066593 has 4 divisors (see below), whose sum is σ = 33125790400. Its totient is φ = 24844342788.

The previous prime is 28985066569. The next prime is 28985066629. The reversal of 28985066593 is 39566058982.

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 28985066593 - 2¹⁷ = 28984935521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28985066293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2070361893 + ... + 2070361906.

It is an arithmetic number, because the mean of its divisors is an integer number (8281447600).

Almost surely, 2^28985066593 is an apocalyptic number.

It is an amenable number.

28985066593 is a deficient number, since it is larger than the sum of its proper divisors (4140723807).

28985066593 is an equidigital number, since it uses as much as digits as its factorization.

28985066593 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4140723806.

The product of its (nonzero) digits is 27993600, while the sum is 61.

The spelling of 28985066593 in words is "twenty-eight billion, nine hundred eighty-five million, sixty-six thousand, five hundred ninety-three".