16663402224 has 120 divisors (see below), whose sum is σ = 55015780352. Its totient is φ = 4607383680.

The previous prime is 16663402213. The next prime is 16663402229. The reversal of 16663402224 is 42220436661.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16663402229) 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 23 ways as a sum of consecutive naturals, for example, 235384 + ... + 297879.

Almost surely, 2^16663402224 is an apocalyptic number.

16663402224 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

16663402224 is an abundant number, since it is smaller than the sum of its proper divisors (38352378128).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16663402224 is a wasteful number, since it uses less digits than its factorization.

16663402224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 533315 (or 533306 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 36.

Adding to 16663402224 its reverse (42220436661), we get a palindrome (58883838885).

The spelling of 16663402224 in words is "sixteen billion, six hundred sixty-three million, four hundred two thousand, two hundred twenty-four".