16604335964160 has 1216 divisors, whose sum is σ = 68265690608640. Its totient is φ = 3750714408960.

The previous prime is 16604335964141. The next prime is 16604335964197. The reversal of 16604335964160 is 6146953340661.

It is a happy number.

16604335964160 is a `hidden beast` number, since 1 + 6 + 6 + 0 + 4 + 3 + 3 + 596 + 41 + 6 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 16604335964097 and 16604335964106.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 24029429415 + ... + 24029430105.

Almost surely, 2^{16604335964160} is an apocalyptic number.

16604335964160 is a gapful number since it is divisible by the number (10) 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 16604335964160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34132845304320).

16604335964160 is an abundant number, since it is smaller than the sum of its proper divisors (51661354644480).

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

16604335964160 is an frugal number, since it uses more digits than its factorization.

16604335964160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 845 (or 805 counting only the distinct ones).

The product of its (nonzero) digits is 8398080, while the sum is 54.

The spelling of 16604335964160 in words is "sixteen trillion, six hundred four billion, three hundred thirty-five million, nine hundred sixty-four thousand, one hundred sixty".