9166255902720 has 520 divisors, whose sum is σ = 37552862776704. Its totient is φ = 2095141552128.

The previous prime is 9166255902719. The next prime is 9166255902911. The reversal of 9166255902720 is 272095526619.

9166255902720 is a `hidden beast` number, since 9 + 1 + 6 + 6 + 2 + 5 + 590 + 27 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

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, 11217477 + ... + 12006843.

Almost surely, 2^{9166255902720} is an apocalyptic number.

9166255902720 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9166255902720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18776431388352).

9166255902720 is an abundant number, since it is smaller than the sum of its proper divisors (28386606873984).

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

9166255902720 is an equidigital number, since it uses as much as digits as its factorization.

9166255902720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 789415 (or 789384 counting only the distinct ones).

The product of its (nonzero) digits is 4082400, while the sum is 54.

The spelling of 9166255902720 in words is "nine trillion, one hundred sixty-six billion, two hundred fifty-five million, nine hundred two thousand, seven hundred twenty".