9716778911 has 32 divisors (see below), whose sum is σ = 11654922240. Its totient is φ = 7925752800.

The previous prime is 9716778901. The next prime is 9716778931. The reversal of 9716778911 is 1198776179.

9716778911 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9716778911 - 2¹⁴ = 9716762527 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9716778901) 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 31 ways as a sum of consecutive naturals, for example, 9351530 + ... + 9352568.

It is an arithmetic number, because the mean of its divisors is an integer number (364216320).

Almost surely, 2^9716778911 is an apocalyptic number.

9716778911 is a deficient number, since it is larger than the sum of its proper divisors (1938143329).

9716778911 is a wasteful number, since it uses less digits than its factorization.

9716778911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1755.

The product of its digits is 1333584, while the sum is 56.

The square root of 9716778911 is about 98573.7232278461. The cubic root of 9716778911 is about 2133.9002144696.

The spelling of 9716778911 in words is "nine billion, seven hundred sixteen million, seven hundred seventy-eight thousand, nine hundred eleven".