16421767066496 has 256 divisors, whose sum is σ = 36611473305600. Its totient is φ = 7273663488000.

The previous prime is 16421767066483. The next prime is 16421767066513. The reversal of 16421767066496 is 69466076712461.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11163675041 + ... + 11163676511.

It is an arithmetic number, because the mean of its divisors is an integer number (143013567600).

Almost surely, 2^{16421767066496} is an apocalyptic number.

16421767066496 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 16421767066496, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18305736652800).

16421767066496 is an abundant number, since it is smaller than the sum of its proper divisors (20189706239104).

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

16421767066496 is a wasteful number, since it uses less digits than its factorization.

16421767066496 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2469 (or 2457 counting only the distinct ones).

The product of its (nonzero) digits is 109734912, while the sum is 65.

The spelling of 16421767066496 in words is "sixteen trillion, four hundred twenty-one billion, seven hundred sixty-seven million, sixty-six thousand, four hundred ninety-six".