8681771868 has 96 divisors (see below), whose sum is σ = 25282682880. Its totient is φ = 2252629440.

The previous prime is 8681771851. The next prime is 8681771887.

8681771868 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 977793 + ... + 986631.

It is an arithmetic number, because the mean of its divisors is an integer number (263361280).

Almost surely, 2^8681771868 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8681771868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12641341440).

8681771868 is an abundant number, since it is smaller than the sum of its proper divisors (16600911012).

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

8681771868 is a wasteful number, since it uses less digits than its factorization.

8681771868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9927 (or 9925 counting only the distinct ones).

The product of its digits is 7225344, while the sum is 60.

The square root of 8681771868 is about 93176.0262513915. The cubic root of 8681771868 is about 2055.2727140277.

The spelling of 8681771868 in words is "eight billion, six hundred eighty-one million, seven hundred seventy-one thousand, eight hundred sixty-eight".