9999015016 has 8 divisors (see below), whose sum is σ = 18748153170. Its totient is φ = 4999507504.

The previous prime is 9999014959. The next prime is 9999015023. The reversal of 9999015016 is 6105109999.

It can be written as a sum of positive squares in only one way, i.e., 6153774916 + 3845240100 = 78446^2 + 62010^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 624938431 + ... + 624938446.

Almost surely, 2^9999015016 is an apocalyptic number.

It is an amenable number.

9999015016 is a deficient number, since it is larger than the sum of its proper divisors (8749138154).

9999015016 is a wasteful number, since it uses less digits than its factorization.

9999015016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1249876883 (or 1249876879 counting only the distinct ones).

The product of its (nonzero) digits is 196830, while the sum is 49.

The square root of 9999015016 is about 99995.0749587198. The cubic root of 9999015016 is about 2154.3639515860.

The spelling of 9999015016 in words is "nine billion, nine hundred ninety-nine million, fifteen thousand, sixteen".