99673686350784 has 840 divisors, whose sum is σ = 377441860190208. Its totient is φ = 25439531120640.

The previous prime is 99673686350783. The next prime is 99673686350789. The reversal of 99673686350784 is 48705368637699.

99673686350784 is a `hidden beast` number, since 9 + 96 + 7 + 36 + 86 + 350 + 78 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (81).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99673686350783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 189850689 + ... + 190374975.

Almost surely, 2^{99673686350784} 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 99673686350784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (188720930095104).

99673686350784 is an abundant number, since it is smaller than the sum of its proper divisors (277768173839424).

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

99673686350784 is a wasteful number, since it uses less digits than its factorization.

99673686350784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 524375 (or 524343 counting only the distinct ones).

The product of its (nonzero) digits is 9876142080, while the sum is 81.

The spelling of 99673686350784 in words is "ninety-nine trillion, six hundred seventy-three billion, six hundred eighty-six million, three hundred fifty thousand, seven hundred eighty-four".