8781366911 has 2 divisors, whose sum is σ = 8781366912. Its totient is φ = 8781366910.

The previous prime is 8781366889. The next prime is 8781366929. The reversal of 8781366911 is 1196631878.

8781366911 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8781366911 is a prime.

It is a super-2 number, since 2×8781366911² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8781366911.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8781365911) 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 as a sum of consecutive naturals, namely, 4390683455 + 4390683456.

It is an arithmetic number, because the mean of its divisors is an integer number (4390683456).

Almost surely, 2^8781366911 is an apocalyptic number.

8781366911 is a deficient number, since it is larger than the sum of its proper divisors (1).

8781366911 is an equidigital number, since it uses as much as digits as its factorization.

8781366911 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 435456, while the sum is 50.

The square root of 8781366911 is about 93708.9478705209. The cubic root of 8781366911 is about 2063.1020370498.

The spelling of 8781366911 in words is "eight billion, seven hundred eighty-one million, three hundred sixty-six thousand, nine hundred eleven".