6820201811 has 2 divisors, whose sum is σ = 6820201812. Its totient is φ = 6820201810.

The previous prime is 6820201781. The next prime is 6820201849. The reversal of 6820201811 is 1181020286.

6820201811 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6820201811 - 2⁶ = 6820201747 is a prime.

It is not a weakly prime, because it can be changed into another prime (6820201711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3410100905 + 3410100906.

It is an arithmetic number, because the mean of its divisors is an integer number (3410100906).

Almost surely, 2^6820201811 is an apocalyptic number.

6820201811 is a deficient number, since it is larger than the sum of its proper divisors (1).

6820201811 is an equidigital number, since it uses as much as digits as its factorization.

6820201811 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1536, while the sum is 29.

The square root of 6820201811 is about 82584.5131425984. The cubic root of 6820201811 is about 1896.4107503022.

The spelling of 6820201811 in words is "six billion, eight hundred twenty million, two hundred one thousand, eight hundred eleven".