6855163728 has 80 divisors (see below), whose sum is σ = 20258405760. Its totient is φ = 1956745728.

The previous prime is 6855163717. The next prime is 6855163801. The reversal of 6855163728 is 8273615586.

It is a happy number.

It is a hoax number, since the sum of its digits (51) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 363426 + ... + 381822.

It is an arithmetic number, because the mean of its divisors is an integer number (253230072).

Almost surely, 2^6855163728 is an apocalyptic number.

It is an amenable number.

6855163728 is an abundant number, since it is smaller than the sum of its proper divisors (13403242032).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6855163728 is a wasteful number, since it uses less digits than its factorization.

6855163728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19524 (or 19518 counting only the distinct ones).

The product of its digits is 2419200, while the sum is 51.

The square root of 6855163728 is about 82795.9161311716. The cubic root of 6855163728 is about 1899.6457075312.

The spelling of 6855163728 in words is "six billion, eight hundred fifty-five million, one hundred sixty-three thousand, seven hundred twenty-eight".