16515666163 has 2 divisors, whose sum is σ = 16515666164. Its totient is φ = 16515666162.

The previous prime is 16515666151. The next prime is 16515666169. The reversal of 16515666163 is 36166651561.

16515666163 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 is a cyclic number.

It is not a de Polignac number, because 16515666163 - 2²¹ = 16513569011 is a prime.

It is a super-4 number, since 4×16515666163⁴ (a number of 42 digits) contains 4444 as substring.

It is not a weakly prime, because it can be changed into another prime (16515666169) 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 as a sum of consecutive naturals, namely, 8257833081 + 8257833082.

It is an arithmetic number, because the mean of its divisors is an integer number (8257833082).

Almost surely, 2^16515666163 is an apocalyptic number.

16515666163 is a deficient number, since it is larger than the sum of its proper divisors (1).

16515666163 is an equidigital number, since it uses as much as digits as its factorization.

16515666163 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 583200, while the sum is 46.

The spelling of 16515666163 in words is "sixteen billion, five hundred fifteen million, six hundred sixty-six thousand, one hundred sixty-three".