16613065972320 has 384 divisors, whose sum is σ = 55543748198400. Its totient is φ = 4162182838272.

The previous prime is 16613065972319. The next prime is 16613065972343. The reversal of 16613065972320 is 2327956031661.

It is a happy number.

It is a super-2 number, since 2×16613065972320² (a number of 27 digits) contains 22 as substring.

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, 668602137 + ... + 668626983.

It is an arithmetic number, because the mean of its divisors is an integer number (144645177600).

Almost surely, 2^{16613065972320} is an apocalyptic number.

16613065972320 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 16613065972320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27771874099200).

16613065972320 is an abundant number, since it is smaller than the sum of its proper divisors (38930682226080).

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

16613065972320 is a wasteful number, since it uses less digits than its factorization.

16613065972320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25490 (or 25482 counting only the distinct ones).

The product of its (nonzero) digits is 2449440, while the sum is 51.

The spelling of 16613065972320 in words is "sixteen trillion, six hundred thirteen billion, sixty-five million, nine hundred seventy-two thousand, three hundred twenty".