8105638688 has 48 divisors (see below), whose sum is σ = 18442650240. Its totient is φ = 3434804736.

The previous prime is 8105638661. The next prime is 8105638691. The reversal of 8105638688 is 8868365018.

It is a super-2 number, since 2×8105638688² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 183356 + ... + 223227.

It is an arithmetic number, because the mean of its divisors is an integer number (384221880).

Almost surely, 2^8105638688 is an apocalyptic number.

It is an amenable number.

8105638688 is an abundant number, since it is smaller than the sum of its proper divisors (10337011552).

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

8105638688 is a wasteful number, since it uses less digits than its factorization.

8105638688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406689 (or 406681 counting only the distinct ones).

The product of its (nonzero) digits is 2211840, while the sum is 53.

The square root of 8105638688 is about 90031.3205945575. The cubic root of 8105638688 is about 2008.7647574041.

The spelling of 8105638688 in words is "eight billion, one hundred five million, six hundred thirty-eight thousand, six hundred eighty-eight".