16504254065664 has 132 divisors (see below), whose sum is σ = 47671892112936. Its totient is φ = 5499545960448.

The previous prime is 16504254065647. The next prime is 16504254065683. The reversal of 16504254065664 is 46656045240561.

16504254065664 is a `hidden beast` number, since 1 + 6 + 5 + 0 + 42 + 540 + 6 + 56 + 6 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 16504254065664.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26911627 + ... + 27518069.

Almost surely, 2^{16504254065664} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16504254065664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23835946056468).

16504254065664 is an abundant number, since it is smaller than the sum of its proper divisors (31167638047272).

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

16504254065664 is a wasteful number, since it uses less digits than its factorization.

16504254065664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 609422 (or 609401 counting only the distinct ones).

The product of its (nonzero) digits is 20736000, while the sum is 54.

The spelling of 16504254065664 in words is "sixteen trillion, five hundred four billion, two hundred fifty-four million, sixty-five thousand, six hundred sixty-four".