6851515316 has 12 divisors (see below), whose sum is σ = 11997229188. Its totient is φ = 3423735552.

The previous prime is 6851515309. The next prime is 6851515331. The reversal of 6851515316 is 6135151586.

It can be written as a sum of positive squares in 2 ways, for example, as 4291560100 + 2559955216 = 65510^2 + 50596^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 497891 + ... + 511466.

It is an arithmetic number, because the mean of its divisors is an integer number (999769099).

Almost surely, 2^6851515316 is an apocalyptic number.

It is an amenable number.

6851515316 is a deficient number, since it is larger than the sum of its proper divisors (5145713872).

6851515316 is a wasteful number, since it uses less digits than its factorization.

6851515316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1011058 (or 1011056 counting only the distinct ones).

The product of its digits is 108000, while the sum is 41.

The square root of 6851515316 is about 82773.8806387619. The cubic root of 6851515316 is about 1899.3086419083.

The spelling of 6851515316 in words is "six billion, eight hundred fifty-one million, five hundred fifteen thousand, three hundred sixteen".