6855366528 has 128 divisors (see below), whose sum is σ = 20393472000. Its totient is φ = 2266983936.

The previous prime is 6855366517. The next prime is 6855366587. The reversal of 6855366528 is 8256635586.

6855366528 is a `hidden beast` number, since 6 + 8 + 5 + 53 + 66 + 528 = 666.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 431103 + ... + 446721.

It is an arithmetic number, because the mean of its divisors is an integer number (159324000).

Almost surely, 2^6855366528 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6855366528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10196736000).

6855366528 is an abundant number, since it is smaller than the sum of its proper divisors (13538105472).

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

6855366528 is a wasteful number, since it uses less digits than its factorization.

6855366528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15769 (or 15751 counting only the distinct ones).

The product of its digits is 10368000, while the sum is 54.

The square root of 6855366528 is about 82797.1408201998. The cubic root of 6855366528 is about 1899.6644400937.

The spelling of 6855366528 in words is "six billion, eight hundred fifty-five million, three hundred sixty-six thousand, five hundred twenty-eight".