16163668628249 has 2 divisors, whose sum is σ = 16163668628250. Its totient is φ = 16163668628248.

The previous prime is 16163668628231. The next prime is 16163668628333. The reversal of 16163668628249 is 94282686636161.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15928424227849 + 235244400400 = 3991043^2 + 485020^2 .

It is a cyclic number.

It is not a de Polignac number, because 16163668628249 - 2³² = 16159373660953 is a prime.

It is a super-2 number, since 2×16163668628249² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (16163668625249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8081834314124 + 8081834314125.

It is an arithmetic number, because the mean of its divisors is an integer number (8081834314125).

Almost surely, 2^{16163668628249} is an apocalyptic number.

It is an amenable number.

16163668628249 is a deficient number, since it is larger than the sum of its proper divisors (1).

16163668628249 is an equidigital number, since it uses as much as digits as its factorization.

16163668628249 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 214990848, while the sum is 68.

The spelling of 16163668628249 in words is "sixteen trillion, one hundred sixty-three billion, six hundred sixty-eight million, six hundred twenty-eight thousand, two hundred forty-nine".