99788825849440 has 768 divisors, whose sum is σ = 333825307361280. Its totient is φ = 27250965872640.

The previous prime is 99788825849393. The next prime is 99788825849443. The reversal of 99788825849440 is 4494852888799.

It is a Harshad number since it is a multiple of its sum of digits (85).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99788825849443) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 145447044 + ... + 146131516.

It is an arithmetic number, because the mean of its divisors is an integer number (434668368960).

Almost surely, 2^{99788825849440} 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 99788825849440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (166912653680640).

99788825849440 is an abundant number, since it is smaller than the sum of its proper divisors (234036481511840).

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

99788825849440 is a wasteful number, since it uses less digits than its factorization.

99788825849440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 684575 (or 684567 counting only the distinct ones).

The product of its (nonzero) digits is 13377208320, while the sum is 85.

The spelling of 99788825849440 in words is "ninety-nine trillion, seven hundred eighty-eight billion, eight hundred twenty-five million, eight hundred forty-nine thousand, four hundred forty".