6861166916 has 12 divisors (see below), whose sum is σ = 12021124332. Its totient is φ = 3426559968.

The previous prime is 6861166877. The next prime is 6861166943. The reversal of 6861166916 is 6196611686.

It can be written as a sum of positive squares in 2 ways, for example, as 4193857600 + 2667309316 = 64760^2 + 51646^2 .

It is a super-2 number, since 2×6861166916² = 94151222898425902112, which contains 22 as substring.

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, 1002035 + ... + 1008858.

It is an arithmetic number, because the mean of its divisors is an integer number (1001760361).

Almost surely, 2^6861166916 is an apocalyptic number.

It is an amenable number.

6861166916 is a deficient number, since it is larger than the sum of its proper divisors (5159957416).

6861166916 is a wasteful number, since it uses less digits than its factorization.

6861166916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2011750 (or 2011748 counting only the distinct ones).

The product of its digits is 559872, while the sum is 50.

The square root of 6861166916 is about 82832.1611211491. The cubic root of 6861166916 is about 1900.2000635131.

The spelling of 6861166916 in words is "six billion, eight hundred sixty-one million, one hundred sixty-six thousand, nine hundred sixteen".