6856141018 has 4 divisors (see below), whose sum is σ = 10284211530. Its totient is φ = 3428070508.

The previous prime is 6856140989. The next prime is 6856141031. The reversal of 6856141018 is 8101416586.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8101416586 = 2 ⋅4050708293.

It can be written as a sum of positive squares in only one way, i.e., 5074710169 + 1781430849 = 71237^2 + 42207^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1714035253 + ... + 1714035256.

Almost surely, 2^6856141018 is an apocalyptic number.

6856141018 is a deficient number, since it is larger than the sum of its proper divisors (3428070512).

6856141018 is a wasteful number, since it uses less digits than its factorization.

6856141018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3428070511.

The product of its (nonzero) digits is 46080, while the sum is 40.

The square root of 6856141018 is about 82801.8177215935. The cubic root of 6856141018 is about 1899.7359760553.

The spelling of 6856141018 in words is "six billion, eight hundred fifty-six million, one hundred forty-one thousand, eighteen".