8120618678 has 4 divisors (see below), whose sum is σ = 12180928020. Its totient is φ = 4060309338.

The previous prime is 8120618669. The next prime is 8120618689. The reversal of 8120618678 is 8768160218.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

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, 2030154668 + ... + 2030154671.

It is an arithmetic number, because the mean of its divisors is an integer number (3045232005).

Almost surely, 2^8120618678 is an apocalyptic number.

8120618678 is a deficient number, since it is larger than the sum of its proper divisors (4060309342).

8120618678 is a wasteful number, since it uses less digits than its factorization.

8120618678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4060309341.

The product of its (nonzero) digits is 258048, while the sum is 47.

The square root of 8120618678 is about 90114.4754076724. The cubic root of 8120618678 is about 2010.0014585437.

The spelling of 8120618678 in words is "eight billion, one hundred twenty million, six hundred eighteen thousand, six hundred seventy-eight".