9491194240000 has 440 divisors, whose sum is σ = 26756599834800. Its totient is φ = 3332259840000.

The previous prime is 9491194239931. The next prime is 9491194240019. The reversal of 9491194240000 is 424911949.

It is a tau number, because it is divible by the number of its divisors (440).

It is a congruent number.

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 39 ways as a sum of consecutive naturals, for example, 204136756 + ... + 204183244.

It is an arithmetic number, because the mean of its divisors is an integer number (60810454170).

Almost surely, 2^{9491194240000} 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 9491194240000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13378299917400).

9491194240000 is an abundant number, since it is smaller than the sum of its proper divisors (17265405594800).

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

9491194240000 is a wasteful number, since it uses less digits than its factorization.

9491194240000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46569 (or 46536 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 43.

The spelling of 9491194240000 in words is "nine trillion, four hundred ninety-one billion, one hundred ninety-four million, two hundred forty thousand".