16385066624 has 16 divisors (see below), whose sum is σ = 32642125170. Its totient is φ = 8192533248.

The previous prime is 16385066617. The next prime is 16385066627. The reversal of 16385066624 is 42666058361.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 9402793024 + 6982273600 = 96968^2 + 83560^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is not an unprimeable number, because it can be changed into a prime (16385066627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64004039 + ... + 64004294.

Almost surely, 2^16385066624 is an apocalyptic number.

It is an amenable number.

16385066624 is a deficient number, since it is larger than the sum of its proper divisors (16257058546).

16385066624 is an equidigital number, since it uses as much as digits as its factorization.

16385066624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128008347 (or 128008335 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 47.

The spelling of 16385066624 in words is "sixteen billion, three hundred eighty-five million, sixty-six thousand, six hundred twenty-four".