8197120055 has 8 divisors (see below), whose sum is σ = 9838878144. Its totient is φ = 6556140000.

The previous prime is 8197120039. The next prime is 8197120073. The reversal of 8197120055 is 5500217918.

8197120055 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 8197120055 - 2⁴ = 8197120039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 171071 + ... + 213680.

It is an arithmetic number, because the mean of its divisors is an integer number (1229859768).

Almost surely, 2^8197120055 is an apocalyptic number.

8197120055 is a deficient number, since it is larger than the sum of its proper divisors (1641758089).

8197120055 is a wasteful number, since it uses less digits than its factorization.

8197120055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 389017.

The product of its (nonzero) digits is 25200, while the sum is 38.

The square root of 8197120055 is about 90537.9481488287. The cubic root of 8197120055 is about 2016.2935705605.

The spelling of 8197120055 in words is "eight billion, one hundred ninety-seven million, one hundred twenty thousand, fifty-five".