16663232243 has 8 divisors (see below), whose sum is σ = 19123376640. Its totient is φ = 14223008520.

The previous prime is 16663232213. The next prime is 16663232269. The reversal of 16663232243 is 34223236661.

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

It is not a de Polignac number, because 16663232243 - 2⁸ = 16663231987 is a prime.

It is a super-2 number, since 2×16663232243² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16663232197 and 16663232206.

It is not an unprimeable number, because it can be changed into a prime (16663232213) 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, 4978373 + ... + 4981718.

It is an arithmetic number, because the mean of its divisors is an integer number (2390422080).

Almost surely, 2^16663232243 is an apocalyptic number.

16663232243 is a deficient number, since it is larger than the sum of its proper divisors (2460144397).

16663232243 is an equidigital number, since it uses as much as digits as its factorization.

16663232243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9960337.

The product of its digits is 186624, while the sum is 38.

The spelling of 16663232243 in words is "sixteen billion, six hundred sixty-three million, two hundred thirty-two thousand, two hundred forty-three".