8128443485 has 16 divisors (see below), whose sum is σ = 10270652160. Its totient is φ = 6158617920.

The previous prime is 8128443469. The next prime is 8128443541. The reversal of 8128443485 is 5843448218.

It is not a de Polignac number, because 8128443485 - 2⁴ = 8128443469 is a prime.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 351995 + ... + 374375.

It is an arithmetic number, because the mean of its divisors is an integer number (641915760).

Almost surely, 2^8128443485 is an apocalyptic number.

It is an amenable number.

8128443485 is a deficient number, since it is larger than the sum of its proper divisors (2142208675).

8128443485 is a wasteful number, since it uses less digits than its factorization.

8128443485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26228.

The product of its digits is 983040, while the sum is 47.

The square root of 8128443485 is about 90157.8808812630. The cubic root of 8128443485 is about 2010.6468455172.

The spelling of 8128443485 in words is "eight billion, one hundred twenty-eight million, four hundred forty-three thousand, four hundred eighty-five".