99820330650 has 144 divisors (see below), whose sum is σ = 274465825920. Its totient is φ = 26002166400.

The previous prime is 99820330639. The next prime is 99820330679. The reversal of 99820330650 is 5603302899.

99820330650 is a `hidden beast` number, since 9 + 98 + 203 + 306 + 50 = 666.

99820330650 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×99820330650² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 99820330596 and 99820330605.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 3468219 + ... + 3496881.

It is an arithmetic number, because the mean of its divisors is an integer number (1906012680).

Almost surely, 2^99820330650 is an apocalyptic number.

99820330650 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

99820330650 is the 257967-th pentagonal number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99820330650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (137232912960).

99820330650 is an abundant number, since it is smaller than the sum of its proper divisors (174645495270).

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

99820330650 is a wasteful number, since it uses less digits than its factorization.

99820330650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28861 (or 28853 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 45.

The spelling of 99820330650 in words is "ninety-nine billion, eight hundred twenty million, three hundred thirty thousand, six hundred fifty".