16233805999 has 4 divisors (see below), whose sum is σ = 16341314800. Its totient is φ = 16126297200.

The previous prime is 16233805993. The next prime is 16233806009. The reversal of 16233805999 is 99950833261.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99950833261 = 1163 ⋅85942247.

It is a cyclic number.

It is not a de Polignac number, because 16233805999 - 2⁷ = 16233805871 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 (16233805993) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53754174 + ... + 53754475.

It is an arithmetic number, because the mean of its divisors is an integer number (4085328700).

Almost surely, 2^16233805999 is an apocalyptic number.

16233805999 is a deficient number, since it is larger than the sum of its proper divisors (107508801).

16233805999 is a wasteful number, since it uses less digits than its factorization.

16233805999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107508800.

The product of its (nonzero) digits is 3149280, while the sum is 55.

The spelling of 16233805999 in words is "sixteen billion, two hundred thirty-three million, eight hundred five thousand, nine hundred ninety-nine".