16605333350661 has 8 divisors (see below), whose sum is σ = 24153212146464. Its totient is φ = 10063838394320.

The previous prime is 16605333350653. The next prime is 16605333350701.

16605333350661 is nontrivially palindromic in base 10.

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 16605333350661 - 2³ = 16605333350653 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 16605333350661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16605333350261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 251595959826 + ... + 251595959891.

It is an arithmetic number, because the mean of its divisors is an integer number (3019151518308).

Almost surely, 2^{16605333350661} is an apocalyptic number.

16605333350661 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

16605333350661 is a deficient number, since it is larger than the sum of its proper divisors (7547878795803).

16605333350661 is a wasteful number, since it uses less digits than its factorization.

16605333350661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 503191919731.

The product of its (nonzero) digits is 2624400, while the sum is 48.

The spelling of 16605333350661 in words is "sixteen trillion, six hundred five billion, three hundred thirty-three million, three hundred fifty thousand, six hundred sixty-one".