16333664389 has 4 divisors (see below), whose sum is σ = 18667045024. Its totient is φ = 14000283756.

The previous prime is 16333664387. The next prime is 16333664401. The reversal of 16333664389 is 98346633361.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 98346633361 = 57503 ⋅1710287.

It is a cyclic number.

It is not a de Polignac number, because 16333664389 - 2¹ = 16333664387 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16333664387) 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 3 ways as a sum of consecutive naturals, for example, 1166690307 + ... + 1166690320.

It is an arithmetic number, because the mean of its divisors is an integer number (4666761256).

Almost surely, 2^16333664389 is an apocalyptic number.

It is an amenable number.

16333664389 is a deficient number, since it is larger than the sum of its proper divisors (2333380635).

16333664389 is an equidigital number, since it uses as much as digits as its factorization.

16333664389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2333380634.

The product of its digits is 5038848, while the sum is 52.

The spelling of 16333664389 in words is "sixteen billion, three hundred thirty-three million, six hundred sixty-four thousand, three hundred eighty-nine".