99850823920 has 160 divisors (see below), whose sum is σ = 244647198720. Its totient is φ = 37852738560.

The previous prime is 99850823903. The next prime is 99850823923. The reversal of 99850823920 is 2932805899.

99850823920 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99850823923) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24879834 + ... + 24883846.

It is an arithmetic number, because the mean of its divisors is an integer number (1529044992).

Almost surely, 2^99850823920 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 99850823920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (122323599360).

99850823920 is an abundant number, since it is smaller than the sum of its proper divisors (144796374800).

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

99850823920 is a wasteful number, since it uses less digits than its factorization.

99850823920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4263 (or 4257 counting only the distinct ones).

The product of its (nonzero) digits is 2799360, while the sum is 55.

The spelling of 99850823920 in words is "ninety-nine billion, eight hundred fifty million, eight hundred twenty-three thousand, nine hundred twenty".