99138119200 has 72 divisors (see below), whose sum is σ = 242160602292. Its totient is φ = 39632363520.

The previous prime is 99138119189. The next prime is 99138119221. The reversal of 99138119200 is 291183199.

It can be written as a sum of positive squares in 6 ways, for example, as 36034669584 + 63103449616 = 189828^2 + 251204^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1386732 + ... + 1456468.

Almost surely, 2^99138119200 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 99138119200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (121080301146).

99138119200 is an abundant number, since it is smaller than the sum of its proper divisors (143022483092).

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

99138119200 is a wasteful number, since it uses less digits than its factorization.

99138119200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71534 (or 71521 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 43.

The spelling of 99138119200 in words is "ninety-nine billion, one hundred thirty-eight million, one hundred nineteen thousand, two hundred".