9561818448 has 240 divisors, whose sum is σ = 34383840960. Its totient is φ = 2521725696.

The previous prime is 9561818447. The next prime is 9561818537. The reversal of 9561818448 is 8448181659.

It is a happy number.

9561818448 is a `hidden beast` number, since 9 + 5 + 618 + 18 + 4 + 4 + 8 = 666.

9561818448 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a junction number, because it is equal to n+sod(n) for n = 9561818394 and 9561818403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9561818447) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 257811 + ... + 292557.

It is an arithmetic number, because the mean of its divisors is an integer number (143266004).

Almost surely, 2^9561818448 is an apocalyptic number.

9561818448 is a gapful number since it is divisible by the number (98) 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 9561818448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17191920480).

9561818448 is an abundant number, since it is smaller than the sum of its proper divisors (24822022512).

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

9561818448 is a wasteful number, since it uses less digits than its factorization.

9561818448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34791 (or 34772 counting only the distinct ones).

The product of its digits is 2211840, while the sum is 54.

The square root of 9561818448 is about 97784.5511724628. The cubic root of 9561818448 is about 2122.4957589597.

The spelling of 9561818448 in words is "nine billion, five hundred sixty-one million, eight hundred eighteen thousand, four hundred forty-eight".