9786686811 has 16 divisors (see below), whose sum is σ = 14726050560. Its totient is φ = 5726796320.

The previous prime is 9786686809. The next prime is 9786686843. The reversal of 9786686811 is 1186866879.

9786686811 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 9786686811 - 2¹ = 9786686809 is a prime.

It is a super-3 number, since 3×9786686811³ (a number of 31 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (9786686011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5112255 + ... + 5114168.

It is an arithmetic number, because the mean of its divisors is an integer number (920378160).

Almost surely, 2^9786686811 is an apocalyptic number.

9786686811 is a deficient number, since it is larger than the sum of its proper divisors (4939363749).

9786686811 is a wasteful number, since it uses less digits than its factorization.

9786686811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10226466.

The product of its digits is 6967296, while the sum is 60.

The square root of 9786686811 is about 98927.6847550775. The cubic root of 9786686811 is about 2139.0054780716.

It can be divided in two parts, 97866868 and 11, that added together give a palindrome (97866879).

The spelling of 9786686811 in words is "nine billion, seven hundred eighty-six million, six hundred eighty-six thousand, eight hundred eleven".