8118821338672 has 40 divisors (see below), whose sum is σ = 17255044012752. Its totient is φ = 3669984518400.

The previous prime is 8118821338613. The next prime is 8118821338717. The reversal of 8118821338672 is 2768331288118.

It is a super-2 number, since 2×8118821338672² (a number of 27 digits) contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 127398163 + ... + 127461874.

Almost surely, 2^{8118821338672} is an apocalyptic number.

It is an amenable number.

8118821338672 is an abundant number, since it is smaller than the sum of its proper divisors (9136222674080).

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

8118821338672 is a wasteful number, since it uses less digits than its factorization.

8118821338672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254860237 (or 254860231 counting only the distinct ones).

The product of its digits is 6193152, while the sum is 58.

The spelling of 8118821338672 in words is "eight trillion, one hundred eighteen billion, eight hundred twenty-one million, three hundred thirty-eight thousand, six hundred seventy-two".