8115391296 has 294 divisors, whose sum is σ = 25086756786. Its totient is φ = 2603404800.

The previous prime is 8115391289. The next prime is 8115391301. The reversal of 8115391296 is 6921935118.

8115391296 is a `hidden beast` number, since 8 + 11 + 539 + 12 + 96 = 666.

It can be written as a sum of positive squares in only one way, i.e., 4483641600 + 3631749696 = 66960^2 + 60264^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 41 ways as a sum of consecutive naturals, for example, 44836326 + ... + 44836506.

Almost surely, 2^8115391296 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 8115391296, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12543378393).

8115391296 is an abundant number, since it is smaller than the sum of its proper divisors (16971365490).

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

8115391296 is an equidigital number, since it uses as much as digits as its factorization.

8115391296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273 (or 217 counting only the distinct ones).

The product of its digits is 116640, while the sum is 45.

The square root of 8115391296 is about 90085.4666192056. The cubic root of 8115391296 is about 2009.5700751237.

The spelling of 8115391296 in words is "eight billion, one hundred fifteen million, three hundred ninety-one thousand, two hundred ninety-six".