6861181992 has 64 divisors (see below), whose sum is σ = 19973278080. Its totient is φ = 1923347712.

The previous prime is 6861181927. The next prime is 6861182011. The reversal of 6861181992 is 2991811686.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 376383 + ... + 394190.

It is an arithmetic number, because the mean of its divisors is an integer number (312082470).

Almost surely, 2^6861181992 is an apocalyptic number.

It is an amenable number.

6861181992 is an abundant number, since it is smaller than the sum of its proper divisors (13112096088).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6861181992 is a wasteful number, since it uses less digits than its factorization.

6861181992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 770642 (or 770638 counting only the distinct ones).

The product of its digits is 373248, while the sum is 51.

The square root of 6861181992 is about 82832.2521243990. The cubic root of 6861181992 is about 1900.2014552781.

The spelling of 6861181992 in words is "six billion, eight hundred sixty-one million, one hundred eighty-one thousand, nine hundred ninety-two".