8219066688 has 168 divisors, whose sum is σ = 27081894528. Its totient is φ = 2334532608.

The previous prime is 8219066671. The next prime is 8219066693. The reversal of 8219066688 is 8866609128.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (168).

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 691645 + ... + 703427.

Almost surely, 2^8219066688 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 8219066688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13540947264).

8219066688 is an abundant number, since it is smaller than the sum of its proper divisors (18862827840).

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

8219066688 is a wasteful number, since it uses less digits than its factorization.

8219066688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11981 (or 11968 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 54.

The square root of 8219066688 is about 90659.0684267161. The cubic root of 8219066688 is about 2018.0914142562.

The spelling of 8219066688 in words is "eight billion, two hundred nineteen million, sixty-six thousand, six hundred eighty-eight".