9788861266 has 8 divisors (see below), whose sum is σ = 15080137740. Its totient is φ = 4762148688.

The previous prime is 9788861261. The next prime is 9788861267. The reversal of 9788861266 is 6621688879.

9788861266 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 7587281025 + 2201580241 = 87105^2 + 46921^2 .

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

It is not an unprimeable number, because it can be changed into a prime (9788861261) 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 3 ways as a sum of consecutive naturals, for example, 66140881 + ... + 66141028.

Almost surely, 2^9788861266 is an apocalyptic number.

9788861266 is a deficient number, since it is larger than the sum of its proper divisors (5291276474).

9788861266 is a wasteful number, since it uses less digits than its factorization.

9788861266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132281948.

The product of its digits is 13934592, while the sum is 61.

The square root of 9788861266 is about 98938.6742684578. The cubic root of 9788861266 is about 2139.1638846503.

The spelling of 9788861266 in words is "nine billion, seven hundred eighty-eight million, eight hundred sixty-one thousand, two hundred sixty-six".