9916345866 has 16 divisors (see below), whose sum is σ = 22665933504. Its totient is φ = 2833241664.

The previous prime is 9916345843. The next prime is 9916345877. The reversal of 9916345866 is 6685436199.

9916345866 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon 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 7 ways as a sum of consecutive naturals, for example, 118051695 + ... + 118051778.

It is an arithmetic number, because the mean of its divisors is an integer number (1416620844).

Almost surely, 2^9916345866 is an apocalyptic number.

9916345866 is an abundant number, since it is smaller than the sum of its proper divisors (12749587638).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9916345866 is a wasteful number, since it uses less digits than its factorization.

9916345866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236103485.

The product of its digits is 8398080, while the sum is 57.

The square root of 9916345866 is about 99580.8509001605. The cubic root of 9916345866 is about 2148.4102808388.

The spelling of 9916345866 in words is "nine billion, nine hundred sixteen million, three hundred forty-five thousand, eight hundred sixty-six".