8120806807 has 2 divisors, whose sum is σ = 8120806808. Its totient is φ = 8120806806.

The previous prime is 8120806801. The next prime is 8120806843. The reversal of 8120806807 is 7086080218.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8120806807 - 2⁷ = 8120806679 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8120806807.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8120806801) 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 as a sum of consecutive naturals, namely, 4060403403 + 4060403404.

It is an arithmetic number, because the mean of its divisors is an integer number (4060403404).

Almost surely, 2^8120806807 is an apocalyptic number.

8120806807 is a deficient number, since it is larger than the sum of its proper divisors (1).

8120806807 is an equidigital number, since it uses as much as digits as its factorization.

8120806807 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43008, while the sum is 40.

The square root of 8120806807 is about 90115.5192350352. The cubic root of 8120806807 is about 2010.0169802118.

The spelling of 8120806807 in words is "eight billion, one hundred twenty million, eight hundred six thousand, eight hundred seven".