9921657096 has 192 divisors, whose sum is σ = 30741984000. Its totient is φ = 2863724544.

The previous prime is 9921657059. The next prime is 9921657107. The reversal of 9921657096 is 6907561299.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5838855 + ... + 5840553.

It is an arithmetic number, because the mean of its divisors is an integer number (160114500).

Almost surely, 2^9921657096 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 9921657096, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15370992000).

9921657096 is an abundant number, since it is smaller than the sum of its proper divisors (20820326904).

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

9921657096 is a wasteful number, since it uses less digits than its factorization.

9921657096 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2108 (or 2101 counting only the distinct ones).

The product of its (nonzero) digits is 1837080, while the sum is 54.

The square root of 9921657096 is about 99607.5152586390. The cubic root of 9921657096 is about 2148.7937777671.

The spelling of 9921657096 in words is "nine billion, nine hundred twenty-one million, six hundred fifty-seven thousand, ninety-six".