6851472317 has 4 divisors (see below), whose sum is σ = 6854309436. Its totient is φ = 6848635200.

The previous prime is 6851472269. The next prime is 6851472337. The reversal of 6851472317 is 7132741586.

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

It can be written as a sum of positive squares in 2 ways, for example, as 6332817241 + 518655076 = 79579^2 + 22774^2 .

It is a cyclic number.

It is not a de Polignac number, because 6851472317 - 2¹⁸ = 6851210173 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 (6851472337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1414934 + ... + 1419767.

It is an arithmetic number, because the mean of its divisors is an integer number (1713577359).

Almost surely, 2^6851472317 is an apocalyptic number.

It is an amenable number.

6851472317 is a deficient number, since it is larger than the sum of its proper divisors (2837119).

6851472317 is a wasteful number, since it uses less digits than its factorization.

6851472317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2837118.

The product of its digits is 282240, while the sum is 44.

The square root of 6851472317 is about 82773.6209006227. The cubic root of 6851472317 is about 1899.3046686489.

The spelling of 6851472317 in words is "six billion, eight hundred fifty-one million, four hundred seventy-two thousand, three hundred seventeen".