6855143346843 has 16 divisors (see below), whose sum is σ = 9977579832576. Its totient is φ = 4151939732640.

The previous prime is 6855143346791. The next prime is 6855143346901. The reversal of 6855143346843 is 3486433415586.

It is a happy number.

It is not a de Polignac number, because 6855143346843 - 2²² = 6855139152539 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6855143366843) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67263280 + ... + 67365117.

It is an arithmetic number, because the mean of its divisors is an integer number (623598739536).

Almost surely, 2^{6855143346843} is an apocalyptic number.

6855143346843 is a deficient number, since it is larger than the sum of its proper divisors (3122436485733).

6855143346843 is a wasteful number, since it uses less digits than its factorization.

6855143346843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134629954.

The product of its digits is 99532800, while the sum is 60.

The spelling of 6855143346843 in words is "six trillion, eight hundred fifty-five billion, one hundred forty-three million, three hundred forty-six thousand, eight hundred forty-three".