8666528895648 has 144 divisors (see below), whose sum is σ = 26553317787360. Its totient is φ = 2665411287552.

The previous prime is 8666528895569. The next prime is 8666528895683. The reversal of 8666528895648 is 8465988256668.

It is a tau number, because it is divible by the number of its divisors (144).

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 23 ways as a sum of consecutive naturals, for example, 7722663 + ... + 8773401.

It is an arithmetic number, because the mean of its divisors is an integer number (184398040190).

Almost surely, 2^{8666528895648} 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 8666528895648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13276658893680).

8666528895648 is an abundant number, since it is smaller than the sum of its proper divisors (17886788891712).

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

8666528895648 is a wasteful number, since it uses less digits than its factorization.

8666528895648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1052971 (or 1052960 counting only the distinct ones).

The product of its digits is 9555148800, while the sum is 81.

The spelling of 8666528895648 in words is "eight trillion, six hundred sixty-six billion, five hundred twenty-eight million, eight hundred ninety-five thousand, six hundred forty-eight".