8117720108 has 6 divisors (see below), whose sum is σ = 14206010196. Its totient is φ = 4058860052.

The previous prime is 8117720069. The next prime is 8117720111. The reversal of 8117720108 is 8010277118.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1014715010 + ... + 1014715017.

It is an arithmetic number, because the mean of its divisors is an integer number (2367668366).

Almost surely, 2^8117720108 is an apocalyptic number.

It is an amenable number.

8117720108 is a deficient number, since it is larger than the sum of its proper divisors (6088290088).

8117720108 is a wasteful number, since it uses less digits than its factorization.

8117720108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2029430031 (or 2029430029 counting only the distinct ones).

The product of its (nonzero) digits is 6272, while the sum is 35.

The square root of 8117720108 is about 90098.3912619976. The cubic root of 8117720108 is about 2009.7622804101.

The spelling of 8117720108 in words is "eight billion, one hundred seventeen million, seven hundred twenty thousand, one hundred eight".