9999165960 has 128 divisors (see below), whose sum is σ = 38092089600. Its totient is φ = 2285521920.

The previous prime is 9999165947. The next prime is 9999166031. The reversal of 9999165960 is 695619999.

9999165960 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (63).

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 31 ways as a sum of consecutive naturals, for example, 653761 + ... + 668880.

It is an arithmetic number, because the mean of its divisors is an integer number (297594450).

Almost surely, 2^9999165960 is an apocalyptic number.

9999165960 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

9999165960 is an abundant number, since it is smaller than the sum of its proper divisors (28092923640).

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

9999165960 is a wasteful number, since it uses less digits than its factorization.

9999165960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1322668 (or 1322658 counting only the distinct ones).

The product of its (nonzero) digits is 10628820, while the sum is 63.

The square root of 9999165960 is about 99995.8297130435. The cubic root of 9999165960 is about 2154.3747922097.

The spelling of 9999165960 in words is "nine billion, nine hundred ninety-nine million, one hundred sixty-five thousand, nine hundred sixty".