6855634043 has 4 divisors (see below), whose sum is σ = 6855858648. Its totient is φ = 6855409440.

The previous prime is 6855634021. The next prime is 6855634069. The reversal of 6855634043 is 3404365586.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3404365586 = 2 ⋅1702182793.

It is a cyclic number.

It is not a de Polignac number, because 6855634043 - 2²⁶ = 6788525179 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6855633985 and 6855634003.

It is not an unprimeable number, because it can be changed into a prime (6855634073) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57653 + ... + 130518.

It is an arithmetic number, because the mean of its divisors is an integer number (1713964662).

Almost surely, 2^6855634043 is an apocalyptic number.

6855634043 is a deficient number, since it is larger than the sum of its proper divisors (224605).

6855634043 is a wasteful number, since it uses less digits than its factorization.

6855634043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224604.

The product of its (nonzero) digits is 1036800, while the sum is 44.

The square root of 6855634043 is about 82798.7562889685. The cubic root of 6855634043 is about 1899.6891497924.

The spelling of 6855634043 in words is "six billion, eight hundred fifty-five million, six hundred thirty-four thousand, forty-three".