6811146143 has 4 divisors (see below), whose sum is σ = 6819131928. Its totient is φ = 6803160360.

The previous prime is 6811146137. The next prime is 6811146157. The reversal of 6811146143 is 3416411186.

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

It is a cyclic number.

It is not a de Polignac number, because 6811146143 - 2⁴ = 6811146127 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6811146743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3991613 + ... + 3993318.

It is an arithmetic number, because the mean of its divisors is an integer number (1704782982).

Almost surely, 2^6811146143 is an apocalyptic number.

6811146143 is a deficient number, since it is larger than the sum of its proper divisors (7985785).

6811146143 is an equidigital number, since it uses as much as digits as its factorization.

6811146143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7985784.

The product of its digits is 13824, while the sum is 35.

The square root of 6811146143 is about 82529.6682593599. The cubic root of 6811146143 is about 1895.5710453122.

The spelling of 6811146143 in words is "six billion, eight hundred eleven million, one hundred forty-six thousand, one hundred forty-three".