99891048192 has 288 divisors, whose sum is σ = 293394124800. Its totient is φ = 29984587776.

The previous prime is 99891048091. The next prime is 99891048199. The reversal of 99891048192 is 29184019899.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99891048199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 70196793 + ... + 70198215.

It is an arithmetic number, because the mean of its divisors is an integer number (1018729600).

Almost surely, 2^99891048192 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 99891048192, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (146697062400).

99891048192 is an abundant number, since it is smaller than the sum of its proper divisors (193503076608).

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

99891048192 is a wasteful number, since it uses less digits than its factorization.

99891048192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1623 (or 1609 counting only the distinct ones).

The product of its (nonzero) digits is 3359232, while the sum is 60.

The spelling of 99891048192 in words is "ninety-nine billion, eight hundred ninety-one million, forty-eight thousand, one hundred ninety-two".