9163257688920 has 128 divisors (see below), whose sum is σ = 27780278711040. Its totient is φ = 2417844764160.

The previous prime is 9163257688913. The next prime is 9163257688951. The reversal of 9163257688920 is 298867523619.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3408250 + ... + 5471990.

It is an arithmetic number, because the mean of its divisors is an integer number (217033427430).

Almost surely, 2^{9163257688920} 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 9163257688920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13890139355520).

9163257688920 is an abundant number, since it is smaller than the sum of its proper divisors (18617021022120).

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

9163257688920 is a wasteful number, since it uses less digits than its factorization.

9163257688920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2064145 (or 2064141 counting only the distinct ones).

The product of its (nonzero) digits is 78382080, while the sum is 66.

The spelling of 9163257688920 in words is "nine trillion, one hundred sixty-three billion, two hundred fifty-seven million, six hundred eighty-eight thousand, nine hundred twenty".