18168664299 has 8 divisors (see below), whose sum is σ = 24369945600. Its totient is φ = 12039912936.

The previous prime is 18168664279. The next prime is 18168664331. The reversal of 18168664299 is 99246686181.

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

It is not a de Polignac number, because 18168664299 - 2⁹ = 18168663787 is a prime.

It is a super-2 number, since 2×18168664299² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18168664259) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18131899 + ... + 18132900.

It is an arithmetic number, because the mean of its divisors is an integer number (3046243200).

Almost surely, 2^18168664299 is an apocalyptic number.

18168664299 is a deficient number, since it is larger than the sum of its proper divisors (6201281301).

18168664299 is a wasteful number, since it uses less digits than its factorization.

18168664299 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36264969.

The product of its digits is 8957952, while the sum is 60.

The spelling of 18168664299 in words is "eighteen billion, one hundred sixty-eight million, six hundred sixty-four thousand, two hundred ninety-nine".