9919718016 has 64 divisors (see below), whose sum is σ = 28376130720. Its totient is φ = 3052219392.

The previous prime is 9919717979. The next prime is 9919718021. The reversal of 9919718016 is 6108179199.

It is a tau number, because it is divible by the number of its divisors (64).

It is a self number, because there is not a number n which added to its sum of digits gives 9919718016.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 988570 + ... + 998553.

Almost surely, 2^9919718016 is an apocalyptic number.

9919718016 is a gapful number since it is divisible by the number (96) formed by its first and last digit.

It is an amenable number.

9919718016 is an abundant number, since it is smaller than the sum of its proper divisors (18456412704).

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

9919718016 is a wasteful number, since it uses less digits than its factorization.

9919718016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1987153 (or 1987141 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 51.

The square root of 9919718016 is about 99597.7811801046. The cubic root of 9919718016 is about 2148.6537825199.

The spelling of 9919718016 in words is "nine billion, nine hundred nineteen million, seven hundred eighteen thousand, sixteen".