8115645012 has 24 divisors (see below), whose sum is σ = 19589488800. Its totient is φ = 2611931616.

The previous prime is 8115645007. The next prime is 8115645023. The reversal of 8115645012 is 2105465118.

It is a congruent number.

It is an unprimeable number.

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, 11660062 + ... + 11660757.

It is an arithmetic number, because the mean of its divisors is an integer number (816228700).

Almost surely, 2^8115645012 is an apocalyptic number.

It is an amenable number.

8115645012 is an abundant number, since it is smaller than the sum of its proper divisors (11473843788).

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

8115645012 is a wasteful number, since it uses less digits than its factorization.

8115645012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23320855 (or 23320853 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 33.

The square root of 8115645012 is about 90086.8748042688. The cubic root of 8115645012 is about 2009.5910170085.

The spelling of 8115645012 in words is "eight billion, one hundred fifteen million, six hundred forty-five thousand, twelve".