16530223328 has 12 divisors (see below), whose sum is σ = 32543877240. Its totient is φ = 8265111648.

The previous prime is 16530223327. The next prime is 16530223331. The reversal of 16530223328 is 82332203561.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16530223327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 258284708 + ... + 258284771.

It is an arithmetic number, because the mean of its divisors is an integer number (2711989770).

Almost surely, 2^16530223328 is an apocalyptic number.

It is an amenable number.

16530223328 is a deficient number, since it is larger than the sum of its proper divisors (16013653912).

16530223328 is an equidigital number, since it uses as much as digits as its factorization.

16530223328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 516569489 (or 516569481 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 35.

Adding to 16530223328 its reverse (82332203561), we get a palindrome (98862426889).

The spelling of 16530223328 in words is "sixteen billion, five hundred thirty million, two hundred twenty-three thousand, three hundred twenty-eight".