8117542816 has 24 divisors (see below), whose sum is σ = 16026707844. Its totient is φ = 4047267840.

The previous prime is 8117542793. The next prime is 8117542817. The reversal of 8117542816 is 6182457118.

It can be written as a sum of positive squares in 2 ways, for example, as 8110803600 + 6739216 = 90060^2 + 2596^2 .

It is not an unprimeable number, because it can be changed into a prime (8117542817) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 348015 + ... + 370606.

Almost surely, 2^8117542816 is an apocalyptic number.

It is an amenable number.

8117542816 is a deficient number, since it is larger than the sum of its proper divisors (7909165028).

8117542816 is a wasteful number, since it uses less digits than its factorization.

8117542816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 718984 (or 718976 counting only the distinct ones).

The product of its digits is 107520, while the sum is 43.

The square root of 8117542816 is about 90097.4073766832. The cubic root of 8117542816 is about 2009.7476491522.

The spelling of 8117542816 in words is "eight billion, one hundred seventeen million, five hundred forty-two thousand, eight hundred sixteen".