8681761855 has 8 divisors (see below), whose sum is σ = 11219507712. Its totient is φ = 6411147168.

The previous prime is 8681761853. The next prime is 8681761859. The reversal of 8681761855 is 5581671868.

It is a happy number.

8681761855 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8681761855 - 2¹ = 8681761853 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8681761796 and 8681761805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8681761853) 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 7 ways as a sum of consecutive naturals, for example, 66782719 + ... + 66782848.

It is an arithmetic number, because the mean of its divisors is an integer number (1402438464).

Almost surely, 2^8681761855 is an apocalyptic number.

8681761855 is a deficient number, since it is larger than the sum of its proper divisors (2537745857).

8681761855 is a wasteful number, since it uses less digits than its factorization.

8681761855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133565585.

The product of its digits is 3225600, while the sum is 55.

The square root of 8681761855 is about 93175.9725197435. The cubic root of 8681761855 is about 2055.2719238874.

The spelling of 8681761855 in words is "eight billion, six hundred eighty-one million, seven hundred sixty-one thousand, eight hundred fifty-five".