99166412800 has 672 divisors, whose sum is σ = 321495797952. Its totient is φ = 29444014080.

The previous prime is 99166412759. The next prime is 99166412827. The reversal of 99166412800 is 821466199.

It is a happy number.

It is a congruent number.

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, 316825444 + ... + 316825756.

It is an arithmetic number, because the mean of its divisors is an integer number (478416366).

Almost surely, 2^99166412800 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 99166412800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (160747898976).

99166412800 is an abundant number, since it is smaller than the sum of its proper divisors (222329385152).

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

99166412800 is a wasteful number, since it uses less digits than its factorization.

99166412800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386 (or 357 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 46.

Adding to 99166412800 its reverse (821466199), we get a palindrome (99987878999).

The spelling of 99166412800 in words is "ninety-nine billion, one hundred sixty-six million, four hundred twelve thousand, eight hundred".