16668809748 has 48 divisors (see below), whose sum is σ = 43400972160. Its totient is φ = 5532414912.

The previous prime is 16668809719. The next prime is 16668809761. The reversal of 16668809748 is 84790886661.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 306040 + ... + 356367.

It is an arithmetic number, because the mean of its divisors is an integer number (904186920).

Almost surely, 2^16668809748 is an apocalyptic number.

16668809748 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

16668809748 is an abundant number, since it is smaller than the sum of its proper divisors (26732162412).

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

16668809748 is a wasteful number, since it uses less digits than its factorization.

16668809748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 662653 (or 662645 counting only the distinct ones).

The product of its (nonzero) digits is 27869184, while the sum is 63.

The spelling of 16668809748 in words is "sixteen billion, six hundred sixty-eight million, eight hundred nine thousand, seven hundred forty-eight".