9957608556 has 96 divisors (see below), whose sum is σ = 27215451648. Its totient is φ = 2774338560.

The previous prime is 9957608539. The next prime is 9957608567. The reversal of 9957608556 is 6558067599.

It is a self number, because there is not a number n which added to its sum of digits gives 9957608556.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2645716 + ... + 2649476.

It is an arithmetic number, because the mean of its divisors is an integer number (283494288).

Almost surely, 2^9957608556 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 9957608556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13607725824).

9957608556 is an abundant number, since it is smaller than the sum of its proper divisors (17257843092).

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

9957608556 is a wasteful number, since it uses less digits than its factorization.

9957608556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4551 (or 4549 counting only the distinct ones).

The product of its (nonzero) digits is 20412000, while the sum is 60.

The square root of 9957608556 is about 99787.8176733012. The cubic root of 9957608556 is about 2151.3860581844.

The spelling of 9957608556 in words is "nine billion, nine hundred fifty-seven million, six hundred eight thousand, five hundred fifty-six".