16508684545 has 8 divisors (see below), whose sum is σ = 19862148096. Its totient is φ = 13172463216.

The previous prime is 16508684519. The next prime is 16508684551. The reversal of 16508684545 is 54548680561.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16508684545 - 2¹¹ = 16508682497 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16508684492 and 16508684501.

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 7 ways as a sum of consecutive naturals, for example, 4308447 + ... + 4312276.

It is an arithmetic number, because the mean of its divisors is an integer number (2482768512).

Almost surely, 2^16508684545 is an apocalyptic number.

It is an amenable number.

16508684545 is a deficient number, since it is larger than the sum of its proper divisors (3353463551).

16508684545 is an equidigital number, since it uses as much as digits as its factorization.

16508684545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8621111.

The product of its (nonzero) digits is 4608000, while the sum is 52.

The spelling of 16508684545 in words is "sixteen billion, five hundred eight million, six hundred eighty-four thousand, five hundred forty-five".