99321680000 has 320 divisors, whose sum is σ = 256556250720. Its totient is φ = 38261760000.

The previous prime is 99321679987. The next prime is 99321680027. The reversal of 99321680000 is 8612399.

It is a tau number, because it is divible by the number of its divisors (320).

It is a super-2 number, since 2×99321680000² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 350959859 + ... + 350960141.

Almost surely, 2^99321680000 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 99321680000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (128278125360).

99321680000 is an abundant number, since it is smaller than the sum of its proper divisors (157234570720).

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

99321680000 is a wasteful number, since it uses less digits than its factorization.

99321680000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 465 (or 438 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 38.

The spelling of 99321680000 in words is "ninety-nine billion, three hundred twenty-one million, six hundred eighty thousand".