99421033608 has 384 divisors, whose sum is σ = 309879198720. Its totient is φ = 29674149120.

The previous prime is 99421033603. The next prime is 99421033661. The reversal of 99421033608 is 80633012499.

It is a happy number.

99421033608 is a `hidden beast` number, since 9 + 9 + 4 + 2 + 1 + 0 + 33 + 608 = 666.

It is not an unprimeable number, because it can be changed into a prime (99421033603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 120218491 + ... + 120219317.

It is an arithmetic number, because the mean of its divisors is an integer number (806977080).

Almost surely, 2^99421033608 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 99421033608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (154939599360).

99421033608 is an abundant number, since it is smaller than the sum of its proper divisors (210458165112).

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

99421033608 is a wasteful number, since it uses less digits than its factorization.

99421033608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 999 (or 983 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 45.

The spelling of 99421033608 in words is "ninety-nine billion, four hundred twenty-one million, thirty-three thousand, six hundred eight".