9956995620 has 144 divisors (see below), whose sum is σ = 33002088000. Its totient is φ = 2228117760.

The previous prime is 9956995603. The next prime is 9956995621. The reversal of 9956995620 is 265996599.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is not an unprimeable number, because it can be changed into a prime (9956995621) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 41631 + ... + 147129.

Almost surely, 2^9956995620 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 9956995620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16501044000).

9956995620 is an abundant number, since it is smaller than the sum of its proper divisors (23045092380).

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

9956995620 is a wasteful number, since it uses less digits than its factorization.

9956995620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105546 (or 105533 counting only the distinct ones).

The product of its (nonzero) digits is 11809800, while the sum is 60.

The square root of 9956995620 is about 99784.7464295019. The cubic root of 9956995620 is about 2151.3419147533.

The spelling of 9956995620 in words is "nine billion, nine hundred fifty-six million, nine hundred ninety-five thousand, six hundred twenty".