99643234699 has 8 divisors (see below), whose sum is σ = 105569476848. Its totient is φ = 93724200960.

The previous prime is 99643234657. The next prime is 99643234709.

99643234699 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 99643234699 - 2¹¹ = 99643232651 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 99643234699.

It is not an unprimeable number, because it can be changed into a prime (99643234199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1773622 + ... + 1828939.

It is an arithmetic number, because the mean of its divisors is an integer number (13196184606).

Almost surely, 2^99643234699 is an apocalyptic number.

99643234699 is a deficient number, since it is larger than the sum of its proper divisors (5926242149).

99643234699 is a wasteful number, since it uses less digits than its factorization.

99643234699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3604205.

The product of its digits is 68024448, while the sum is 64.

The spelling of 99643234699 in words is "ninety-nine billion, six hundred forty-three million, two hundred thirty-four thousand, six hundred ninety-nine".