99954645999 has 64 divisors (see below), whose sum is σ = 149606231040. Its totient is φ = 58938485760.

The previous prime is 99954645949. The next prime is 99954646027.

99954645999 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 99954645999 - 2¹¹ = 99954643951 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99954645949) 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 63 ways as a sum of consecutive naturals, for example, 158406414 + ... + 158407044.

It is an arithmetic number, because the mean of its divisors is an integer number (2337597360).

Almost surely, 2^99954645999 is an apocalyptic number.

99954645999 is a deficient number, since it is larger than the sum of its proper divisors (49651585041).

99954645999 is a wasteful number, since it uses less digits than its factorization.

99954645999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1520.

The product of its digits is 1275458400, while the sum is 78.

The spelling of 99954645999 in words is "ninety-nine billion, nine hundred fifty-four million, six hundred forty-five thousand, nine hundred ninety-nine".