99783803992320 has 4032 divisors, whose sum is σ = 451100707545600. Its totient is φ = 20618482286592.

The previous prime is 99783803992277. The next prime is 99783803992349. The reversal of 99783803992320 is 2329930838799.

It is a happy number.

99783803992320 is a `hidden beast` number, since 9 + 9 + 7 + 8 + 380 + 3 + 9 + 9 + 232 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (4032).

It is a Harshad number since it is a multiple of its sum of digits (72).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 447 ways as a sum of consecutive naturals, for example, 612170576559 + ... + 612170576721.

It is an arithmetic number, because the mean of its divisors is an integer number (111880135800).

Almost surely, 2^{99783803992320} is an apocalyptic number.

99783803992320 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 99783803992320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (225550353772800).

99783803992320 is an abundant number, since it is smaller than the sum of its proper divisors (351316903553280).

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

99783803992320 is a wasteful number, since it uses less digits than its factorization.

99783803992320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 412 (or 383 counting only the distinct ones).

The product of its (nonzero) digits is 317447424, while the sum is 72.

The spelling of 99783803992320 in words is "ninety-nine trillion, seven hundred eighty-three billion, eight hundred three million, nine hundred ninety-two thousand, three hundred twenty".