8117078528568 has 128 divisors (see below), whose sum is σ = 20712167723520. Its totient is φ = 2650363822080.

The previous prime is 8117078528521. The next prime is 8117078528569. The reversal of 8117078528568 is 8658258707118.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 8117078528499 and 8117078528508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8117078528569) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 498982371 + ... + 498998637.

It is an arithmetic number, because the mean of its divisors is an integer number (161813810340).

Almost surely, 2^{8117078528568} is an apocalyptic number.

It is an amenable number.

8117078528568 is an abundant number, since it is smaller than the sum of its proper divisors (12595089194952).

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

8117078528568 is a wasteful number, since it uses less digits than its factorization.

8117078528568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18557 (or 18553 counting only the distinct ones).

The product of its (nonzero) digits is 60211200, while the sum is 66.

The spelling of 8117078528568 in words is "eight trillion, one hundred seventeen billion, seventy-eight million, five hundred twenty-eight thousand, five hundred sixty-eight".