9491012923392 has 1248 divisors, whose sum is σ = 38749317035520. Its totient is φ = 2155641569280.

The previous prime is 9491012923391. The next prime is 9491012923429. The reversal of 9491012923392 is 2933292101949.

9491012923392 is a `hidden beast` number, since 9 + 4 + 9 + 10 + 1 + 292 + 339 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (1248).

It is not an unprimeable number, because it can be changed into a prime (9491012923391) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 701109648 + ... + 701123184.

It is an arithmetic number, because the mean of its divisors is an integer number (31049132240).

Almost surely, 2^{9491012923392} 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 9491012923392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19374658517760).

9491012923392 is an abundant number, since it is smaller than the sum of its proper divisors (29258304112128).

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

9491012923392 is a wasteful number, since it uses less digits than its factorization.

9491012923392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13617 (or 13592 counting only the distinct ones).

The product of its (nonzero) digits is 1889568, while the sum is 54.

The spelling of 9491012923392 in words is "nine trillion, four hundred ninety-one billion, twelve million, nine hundred twenty-three thousand, three hundred ninety-two".