16706622646541 has 2 divisors, whose sum is σ = 16706622646542. Its totient is φ = 16706622646540.

The previous prime is 16706622646499. The next prime is 16706622646559. The reversal of 16706622646541 is 14564622660761.

16706622646541 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13008674416516 + 3697948230025 = 3606754^2 + 1923005^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16706622646541 is a prime.

It is a super-2 number, since 2×16706622646541² (a number of 27 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16706622646741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8353311323270 + 8353311323271.

It is an arithmetic number, because the mean of its divisors is an integer number (8353311323271).

Almost surely, 2^{16706622646541} is an apocalyptic number.

It is an amenable number.

16706622646541 is a deficient number, since it is larger than the sum of its proper divisors (1).

16706622646541 is an equidigital number, since it uses as much as digits as its factorization.

16706622646541 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17418240, while the sum is 56.

The spelling of 16706622646541 in words is "sixteen trillion, seven hundred six billion, six hundred twenty-two million, six hundred forty-six thousand, five hundred forty-one".