9166555459240 has 128 divisors (see below), whose sum is σ = 20980542240000. Its totient is φ = 3603894294528.

The previous prime is 9166555459157. The next prime is 9166555459241. The reversal of 9166555459240 is 429545556619.

It is not an unprimeable number, because it can be changed into a prime (9166555459241) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 859332387 + ... + 859343053.

It is an arithmetic number, because the mean of its divisors is an integer number (163910486250).

Almost surely, 2^{9166555459240} 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 9166555459240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10490271120000).

9166555459240 is an abundant number, since it is smaller than the sum of its proper divisors (11813986780760).

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

9166555459240 is a wasteful number, since it uses less digits than its factorization.

9166555459240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12179 (or 12175 counting only the distinct ones).

The product of its (nonzero) digits is 58320000, while the sum is 61.

The spelling of 9166555459240 in words is "nine trillion, one hundred sixty-six billion, five hundred fifty-five million, four hundred fifty-nine thousand, two hundred forty".