9999090910000 has 50 divisors (see below), whose sum is σ = 24208799026412. Its totient is φ = 3999636360000.

The previous prime is 9999090909959. The next prime is 9999090910051. The reversal of 9999090910000 is 190909999.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (50).

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 9 ways as a sum of consecutive naturals, for example, 499944546 + ... + 499964545.

Almost surely, 2^{9999090910000} is an apocalyptic number.

It is an amenable number.

9999090910000 is an abundant number, since it is smaller than the sum of its proper divisors (14209708116412).

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

9999090910000 is an equidigital number, since it uses as much as digits as its factorization.

9999090910000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 999909119 (or 999909098 counting only the distinct ones).

The product of its (nonzero) digits is 531441, while the sum is 55.

The spelling of 9999090910000 in words is "nine trillion, nine hundred ninety-nine billion, ninety million, nine hundred ten thousand".