9766129855 has 16 divisors (see below), whose sum is σ = 11842288128. Its totient is φ = 7731040000.

The previous prime is 9766129831. The next prime is 9766129921. The reversal of 9766129855 is 5589216679.

9766129855 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 9766129855 - 2⁵ = 9766129823 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9766129855.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1061475 + ... + 1070635.

It is an arithmetic number, because the mean of its divisors is an integer number (740143008).

Almost surely, 2^9766129855 is an apocalyptic number.

9766129855 is a deficient number, since it is larger than the sum of its proper divisors (2076158273).

9766129855 is a wasteful number, since it uses less digits than its factorization.

9766129855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11378.

The product of its digits is 8164800, while the sum is 58.

The square root of 9766129855 is about 98823.7312339501. The cubic root of 9766129855 is about 2137.5067664138.

The spelling of 9766129855 in words is "nine billion, seven hundred sixty-six million, one hundred twenty-nine thousand, eight hundred fifty-five".