99768205899 has 16 divisors (see below), whose sum is σ = 150227780640. Its totient is φ = 65421773280.

The previous prime is 99768205897. The next prime is 99768205921. The reversal of 99768205899 is 99850286799.

It is a happy number.

It is not a de Polignac number, because 99768205899 - 2¹ = 99768205897 is a prime.

It is not an unprimeable number, because it can be changed into a prime (99768205897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30286212 + ... + 30289505.

It is an arithmetic number, because the mean of its divisors is an integer number (9389236290).

Almost surely, 2^99768205899 is an apocalyptic number.

99768205899 is a deficient number, since it is larger than the sum of its proper divisors (50459574741).

99768205899 is a wasteful number, since it uses less digits than its factorization.

99768205899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60575787 (or 60575781 counting only the distinct ones).

The product of its (nonzero) digits is 176359680, while the sum is 72.

The spelling of 99768205899 in words is "ninety-nine billion, seven hundred sixty-eight million, two hundred five thousand, eight hundred ninety-nine".