6543875585 has 16 divisors (see below), whose sum is σ = 8461043136. Its totient is φ = 4829919168.

The previous prime is 6543875509. The next prime is 6543875593. The reversal of 6543875585 is 5855783456.

It is a happy number.

6543875585 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6543875585 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6543875585.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 106922 + ... + 156588.

It is an arithmetic number, because the mean of its divisors is an integer number (528815196).

Almost surely, 2^6543875585 is an apocalyptic number.

6543875585 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

6543875585 is a deficient number, since it is larger than the sum of its proper divisors (1917167551).

6543875585 is a wasteful number, since it uses less digits than its factorization.

6543875585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51712.

The product of its digits is 20160000, while the sum is 56.

The square root of 6543875585 is about 80894.2246702445. The cubic root of 6543875585 is about 1870.4452965494.

The spelling of 6543875585 in words is "six billion, five hundred forty-three million, eight hundred seventy-five thousand, five hundred eighty-five".