9556939656 has 256 divisors, whose sum is σ = 31472640000. Its totient is φ = 2654726400.

The previous prime is 9556939643. The next prime is 9556939661. The reversal of 9556939656 is 6569396559.

9556939656 is a `hidden beast` number, since 9 + 5 + 569 + 3 + 9 + 65 + 6 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 9556939593 and 9556939602.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1396050 + ... + 1402878.

It is an arithmetic number, because the mean of its divisors is an integer number (122940000).

Almost surely, 2^9556939656 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 9556939656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15736320000).

9556939656 is an abundant number, since it is smaller than the sum of its proper divisors (21915700344).

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

9556939656 is a wasteful number, since it uses less digits than its factorization.

9556939656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6905 (or 6895 counting only the distinct ones).

The product of its digits is 59049000, while the sum is 63.

The square root of 9556939656 is about 97759.6013494327. The cubic root of 9556939656 is about 2122.1347057044.

The spelling of 9556939656 in words is "nine billion, five hundred fifty-six million, nine hundred thirty-nine thousand, six hundred fifty-six".