16668349884 has 24 divisors (see below), whose sum is σ = 43214240720. Its totient is φ = 5556116592.

The previous prime is 16668349883. The next prime is 16668349889. The reversal of 16668349884 is 48894386661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16668349883) 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, 77168179 + ... + 77168394.

Almost surely, 2^16668349884 is an apocalyptic number.

It is an amenable number.

16668349884 is an abundant number, since it is smaller than the sum of its proper divisors (26545890836).

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

16668349884 is a wasteful number, since it uses less digits than its factorization.

16668349884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154336586 (or 154336578 counting only the distinct ones).

The product of its digits is 47775744, while the sum is 63.

The spelling of 16668349884 in words is "sixteen billion, six hundred sixty-eight million, three hundred forty-nine thousand, eight hundred eighty-four".