99749398576818 has 32 divisors (see below), whose sum is σ = 204641000792064. Its totient is φ = 32398998560912.

The previous prime is 99749398576801. The next prime is 99749398576819. The reversal of 99749398576818 is 81867589394799.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (99749398576819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 779057730 + ... + 779185757.

It is an arithmetic number, because the mean of its divisors is an integer number (6395031274752).

Almost surely, 2^{99749398576818} is an apocalyptic number.

99749398576818 is an abundant number, since it is smaller than the sum of its proper divisors (104891602215246).

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

99749398576818 is a wasteful number, since it uses less digits than its factorization.

99749398576818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1558243766.

The product of its digits is 59256852480, while the sum is 93.

The spelling of 99749398576818 in words is "ninety-nine trillion, seven hundred forty-nine billion, three hundred ninety-eight million, five hundred seventy-six thousand, eight hundred eighteen".