999091801116 has 144 divisors (see below), whose sum is σ = 2689648416000. Its totient is φ = 311614857216.

The previous prime is 999091801091. The next prime is 999091801117. The reversal of 999091801116 is 611108190999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999091801117) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 110404560 + ... + 110413608.

It is an arithmetic number, because the mean of its divisors is an integer number (18678114000).

Almost surely, 2^999091801116 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 999091801116, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1344824208000).

999091801116 is an abundant number, since it is smaller than the sum of its proper divisors (1690556614884).

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

999091801116 is a wasteful number, since it uses less digits than its factorization.

999091801116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10108 (or 10103 counting only the distinct ones).

The product of its (nonzero) digits is 314928, while the sum is 54.

The spelling of 999091801116 in words is "nine hundred ninety-nine billion, ninety-one million, eight hundred one thousand, one hundred sixteen".