8120499555 has 16 divisors (see below), whose sum is σ = 14848913664. Its totient is φ = 3712228320.

The previous prime is 8120499529. The next prime is 8120499559. The reversal of 8120499555 is 5559940218.

It is not a de Polignac number, because 8120499555 - 2⁷ = 8120499427 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8120499559) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 38668941 + ... + 38669150.

It is an arithmetic number, because the mean of its divisors is an integer number (928057104).

Almost surely, 2^8120499555 is an apocalyptic number.

8120499555 is a deficient number, since it is larger than the sum of its proper divisors (6728414109).

8120499555 is a wasteful number, since it uses less digits than its factorization.

8120499555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77338106.

The product of its (nonzero) digits is 648000, while the sum is 48.

The square root of 8120499555 is about 90113.8144515035. The cubic root of 8120499555 is about 2009.9916301228.

The spelling of 8120499555 in words is "eight billion, one hundred twenty million, four hundred ninety-nine thousand, five hundred fifty-five".