8115389312 has 64 divisors (see below), whose sum is σ = 17077378560. Its totient is φ = 3835399680.

The previous prime is 8115389273. The next prime is 8115389333. The reversal of 8115389312 is 2139835118.

It is a tau number, because it is divible by the number of its divisors (64).

It is a self number, because there is not a number n which added to its sum of digits gives 8115389312.

It is a congruent number.

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, 146843 + ... + 194405.

It is an arithmetic number, because the mean of its divisors is an integer number (266834040).

Almost surely, 2^8115389312 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 8115389312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8538689280).

8115389312 is an abundant number, since it is smaller than the sum of its proper divisors (8961989248).

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

8115389312 is a wasteful number, since it uses less digits than its factorization.

8115389312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47651 (or 47639 counting only the distinct ones).

The product of its digits is 51840, while the sum is 41.

The square root of 8115389312 is about 90085.4556074398. The cubic root of 8115389312 is about 2009.5699113613.

The spelling of 8115389312 in words is "eight billion, one hundred fifteen million, three hundred eighty-nine thousand, three hundred twelve".