99728200383280 has 80 divisors (see below), whose sum is σ = 265052021281344. Its totient is φ = 34184790881280.

The previous prime is 99728200383187. The next prime is 99728200383311. The reversal of 99728200383280 is 8238300282799.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17665167 + ... + 22616686.

Almost surely, 2^{99728200383280} is an apocalyptic number.

It is an amenable number.

99728200383280 is an abundant number, since it is smaller than the sum of its proper divisors (165323820898064).

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

99728200383280 is a wasteful number, since it uses less digits than its factorization.

99728200383280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40286294 (or 40286288 counting only the distinct ones).

The product of its (nonzero) digits is 20901888, while the sum is 61.

The spelling of 99728200383280 in words is "ninety-nine trillion, seven hundred twenty-eight billion, two hundred million, three hundred eighty-three thousand, two hundred eighty".