8128517355994 has 48 divisors (see below), whose sum is σ = 14350176496800. Its totient is φ = 3442934660256.

The previous prime is 8128517355983. The next prime is 8128517356009. The reversal of 8128517355994 is 4995537158218.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1437952 + ... + 4280740.

It is an arithmetic number, because the mean of its divisors is an integer number (298962010350).

Almost surely, 2^{8128517355994} is an apocalyptic number.

8128517355994 is a deficient number, since it is larger than the sum of its proper divisors (6221659140806).

8128517355994 is a wasteful number, since it uses less digits than its factorization.

8128517355994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2843147 (or 2843140 counting only the distinct ones).

The product of its digits is 108864000, while the sum is 67.

The spelling of 8128517355994 in words is "eight trillion, one hundred twenty-eight billion, five hundred seventeen million, three hundred fifty-five thousand, nine hundred ninety-four".