16830421605889 has 2 divisors, whose sum is σ = 16830421605890. Its totient is φ = 16830421605888.

The previous prime is 16830421605871. The next prime is 16830421605901. The reversal of 16830421605889 is 98850612403861.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16220434051600 + 609987554289 = 4027460^2 + 781017^2 .

It is a cyclic number.

It is not a de Polignac number, because 16830421605889 - 2³¹ = 16828274122241 is a prime.

It is not a weakly prime, because it can be changed into another prime (16860421605889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8415210802944 + 8415210802945.

It is an arithmetic number, because the mean of its divisors is an integer number (8415210802945).

Almost surely, 2^{16830421605889} is an apocalyptic number.

It is an amenable number.

16830421605889 is a deficient number, since it is larger than the sum of its proper divisors (1).

16830421605889 is an equidigital number, since it uses as much as digits as its factorization.

16830421605889 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19906560, while the sum is 61.

The spelling of 16830421605889 in words is "sixteen trillion, eight hundred thirty billion, four hundred twenty-one million, six hundred five thousand, eight hundred eighty-nine".