99845854899 has 32 divisors (see below), whose sum is σ = 159042109440. Its totient is φ = 54515354400.

The previous prime is 99845854799. The next prime is 99845854907.

99845854899 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 99845854899 - 2¹³ = 99845846707 is a prime.

It is not an unprimeable number, because it can be changed into a prime (99845854699) 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 31 ways as a sum of consecutive naturals, for example, 919287 + ... + 1022144.

It is an arithmetic number, because the mean of its divisors is an integer number (4970065920).

Almost surely, 2^99845854899 is an apocalyptic number.

99845854899 is a deficient number, since it is larger than the sum of its proper divisors (59196254541).

99845854899 is a wasteful number, since it uses less digits than its factorization.

99845854899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1941551.

The product of its digits is 1343692800, while the sum is 78.

The spelling of 99845854899 in words is "ninety-nine billion, eight hundred forty-five million, eight hundred fifty-four thousand, eight hundred ninety-nine".