16990675633 has 4 divisors (see below), whose sum is σ = 16991046180. Its totient is φ = 16990305088.

The previous prime is 16990675631. The next prime is 16990675649. The reversal of 16990675633 is 33657609961.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 33657609961 = 353 ⋅95347337.

It can be written as a sum of positive squares in 2 ways, for example, as 190108944 + 16800566689 = 13788^2 + 129617^2 .

It is a cyclic number.

It is not a de Polignac number, because 16990675633 - 2¹ = 16990675631 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16990675631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104860 + ... + 212077.

It is an arithmetic number, because the mean of its divisors is an integer number (4247761545).

Almost surely, 2^16990675633 is an apocalyptic number.

It is an amenable number.

16990675633 is a deficient number, since it is larger than the sum of its proper divisors (370547).

16990675633 is an equidigital number, since it uses as much as digits as its factorization.

16990675633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370546.

The product of its (nonzero) digits is 5511240, while the sum is 55.

The spelling of 16990675633 in words is "sixteen billion, nine hundred ninety million, six hundred seventy-five thousand, six hundred thirty-three".