9661153320 has 384 divisors, whose sum is σ = 39144268800. Its totient is φ = 2012055552.

The previous prime is 9661153267. The next prime is 9661153321. The reversal of 9661153320 is 233511669.

9661153320 is a `hidden beast` number, since 9 + 6 + 611 + 5 + 3 + 32 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (9661153321) 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, 2586174 + ... + 2589906.

It is an arithmetic number, because the mean of its divisors is an integer number (101938200).

Almost surely, 2^9661153320 is an apocalyptic number.

9661153320 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 9661153320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19572134400).

9661153320 is an abundant number, since it is smaller than the sum of its proper divisors (29483115480).

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

9661153320 is a wasteful number, since it uses less digits than its factorization.

9661153320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3849 (or 3842 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 36.

The square root of 9661153320 is about 98291.1660323551. The cubic root of 9661153320 is about 2129.8204437677.

Adding to 9661153320 its reverse (233511669), we get a palindrome (9894664989).

The spelling of 9661153320 in words is "nine billion, six hundred sixty-one million, one hundred fifty-three thousand, three hundred twenty".