9647448772608 has 208 divisors, whose sum is σ = 30262817208960. Its totient is φ = 3026650005504.

The previous prime is 9647448772607. The next prime is 9647448772667. The reversal of 9647448772608 is 8062778447469.

9647448772608 is a `hidden beast` number, since 9 + 6 + 4 + 7 + 4 + 4 + 8 + 7 + 7 + 2 + 608 = 666.

It is a super-2 number, since 2×9647448772608² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9647448772607) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 685660 + ... + 4445787.

Almost surely, 2^{9647448772608} 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 9647448772608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15131408604480).

9647448772608 is an abundant number, since it is smaller than the sum of its proper divisors (20615368436352).

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

9647448772608 is a wasteful number, since it uses less digits than its factorization.

9647448772608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5131497 (or 5131469 counting only the distinct ones).

The product of its (nonzero) digits is 910393344, while the sum is 72.

The spelling of 9647448772608 in words is "nine trillion, six hundred forty-seven billion, four hundred forty-eight million, seven hundred seventy-two thousand, six hundred eight".