16668103964736 has 672 divisors, whose sum is σ = 56445272358912. Its totient is φ = 4245159444480.

The previous prime is 16668103964713. The next prime is 16668103964741. The reversal of 16668103964736 is 63746930186661.

It is a tau number, because it is divible by the number of its divisors (672).

It is an unprimeable number.

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 95 ways as a sum of consecutive naturals, for example, 565907386 + ... + 565936838.

Almost surely, 2^{16668103964736} is an apocalyptic number.

16668103964736 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16668103964736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28222636179456).

16668103964736 is an abundant number, since it is smaller than the sum of its proper divisors (39777168394176).

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

16668103964736 is a wasteful number, since it uses less digits than its factorization.

16668103964736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29587 (or 29560 counting only the distinct ones).

The product of its (nonzero) digits is 141087744, while the sum is 66.

The spelling of 16668103964736 in words is "sixteen trillion, six hundred sixty-eight billion, one hundred three million, nine hundred sixty-four thousand, seven hundred thirty-six".