99888911100 has 576 divisors, whose sum is σ = 381020613120. Its totient is φ = 22170931200.

The previous prime is 99888911081. The next prime is 99888911123. The reversal of 99888911100 is 111988899.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 18678627 + ... + 18683973.

It is an arithmetic number, because the mean of its divisors is an integer number (661494120).

Almost surely, 2^99888911100 is an apocalyptic number.

99888911100 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99888911100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (190510306560).

99888911100 is an abundant number, since it is smaller than the sum of its proper divisors (281131702020).

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

99888911100 is a wasteful number, since it uses less digits than its factorization.

99888911100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5435 (or 5422 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 54.

The spelling of 99888911100 in words is "ninety-nine billion, eight hundred eighty-eight million, nine hundred eleven thousand, one hundred".