16602536648 has 8 divisors (see below), whose sum is σ = 31129756230. Its totient is φ = 8301268320.

The previous prime is 16602536557. The next prime is 16602536681. The reversal of 16602536648 is 84663520661.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 16332328804 + 270207844 = 127798^2 + 16438^2 .

It is a tau number, because it is divible by the number of its divisors (8).

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 as a sum of consecutive naturals, namely, 1037658533 + ... + 1037658548.

Almost surely, 2^16602536648 is an apocalyptic number.

It is an amenable number.

16602536648 is a deficient number, since it is larger than the sum of its proper divisors (14527219582).

16602536648 is a wasteful number, since it uses less digits than its factorization.

16602536648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2075317087 (or 2075317083 counting only the distinct ones).

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

The spelling of 16602536648 in words is "sixteen billion, six hundred two million, five hundred thirty-six thousand, six hundred forty-eight".