16668339228 has 72 divisors (see below), whose sum is σ = 45382937600. Its totient is φ = 5141265696.

The previous prime is 16668339221. The next prime is 16668339283. The reversal of 16668339228 is 82293386661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16668339221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 253948 + ... + 312771.

Almost surely, 2^16668339228 is an apocalyptic number.

16668339228 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

16668339228 is an abundant number, since it is smaller than the sum of its proper divisors (28714598372).

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

16668339228 is a wasteful number, since it uses less digits than its factorization.

16668339228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 566791 (or 566786 counting only the distinct ones).

The product of its digits is 4478976, while the sum is 54.

The spelling of 16668339228 in words is "sixteen billion, six hundred sixty-eight million, three hundred thirty-nine thousand, two hundred twenty-eight".