16598768641 has 8 divisors (see below), whose sum is σ = 20429253824. Its totient is φ = 13133091600.

The previous prime is 16598768611. The next prime is 16598768647. The reversal of 16598768641 is 14686789561.

It is a happy number.

16598768641 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 16598768641 - 2⁹ = 16598768129 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16598768641.

It is not an unprimeable number, because it can be changed into a prime (16598768647) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 91201935 + ... + 91202116.

It is an arithmetic number, because the mean of its divisors is an integer number (2553656728).

Almost surely, 2^16598768641 is an apocalyptic number.

It is an amenable number.

16598768641 is a deficient number, since it is larger than the sum of its proper divisors (3830485183).

16598768641 is a wasteful number, since it uses less digits than its factorization.

16598768641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182404071.

The product of its digits is 17418240, while the sum is 61.

The spelling of 16598768641 in words is "sixteen billion, five hundred ninety-eight million, seven hundred sixty-eight thousand, six hundred forty-one".