8518416668500 has 48 divisors (see below), whose sum is σ = 18605341237392. Its totient is φ = 3407161680000.

The previous prime is 8518416668491. The next prime is 8518416668549. The reversal of 8518416668500 is 58666148158.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 1405751694736 + 7112664973764 = 1185644^2 + 2666958^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7946482 + ... + 8954518.

It is an arithmetic number, because the mean of its divisors is an integer number (387611275779).

Almost surely, 2^{8518416668500} is an apocalyptic number.

It is an amenable number.

8518416668500 is an abundant number, since it is smaller than the sum of its proper divisors (10086924568892).

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

8518416668500 is a wasteful number, since it uses less digits than its factorization.

8518416668500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1024957 (or 1024945 counting only the distinct ones).

The product of its (nonzero) digits is 11059200, while the sum is 58.

The spelling of 8518416668500 in words is "eight trillion, five hundred eighteen billion, four hundred sixteen million, six hundred sixty-eight thousand, five hundred".