1128843808664 has 32 divisors (see below), whose sum is σ = 2486613986640. Its totient is φ = 473640758400.

The previous prime is 1128843808649. The next prime is 1128843808669. The reversal of 1128843808664 is 4668083488211.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1128843808669) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 493374647 + ... + 493376934.

Almost surely, 2^{1128843808664} is an apocalyptic number.

It is an amenable number.

1128843808664 is an abundant number, since it is smaller than the sum of its proper divisors (1357770177976).

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

1128843808664 is a wasteful number, since it uses less digits than its factorization.

1128843808664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 986751611 (or 986751607 counting only the distinct ones).

The product of its (nonzero) digits is 14155776, while the sum is 59.

The spelling of 1128843808664 in words is "one trillion, one hundred twenty-eight billion, eight hundred forty-three million, eight hundred eight thousand, six hundred sixty-four".