16263444428069 has 2 divisors, whose sum is σ = 16263444428070. Its totient is φ = 16263444428068.

The previous prime is 16263444427943. The next prime is 16263444428081. The reversal of 16263444428069 is 96082444436261.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14637793927969 + 1625650500100 = 3825937^2 + 1275010^2 .

It is a cyclic number.

It is not a de Polignac number, because 16263444428069 - 2¹⁶ = 16263444362533 is a prime.

It is a super-2 number, since 2×16263444428069² (a number of 27 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 16263444427999 and 16263444428017.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16263444425069) 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, 8131722214034 + 8131722214035.

It is an arithmetic number, because the mean of its divisors is an integer number (8131722214035).

Almost surely, 2^{16263444428069} is an apocalyptic number.

It is an amenable number.

16263444428069 is a deficient number, since it is larger than the sum of its proper divisors (1).

16263444428069 is an equidigital number, since it uses as much as digits as its factorization.

16263444428069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 47775744, while the sum is 59.

The spelling of 16263444428069 in words is "sixteen trillion, two hundred sixty-three billion, four hundred forty-four million, four hundred twenty-eight thousand, sixty-nine".