628383777169 has 2 divisors, whose sum is σ = 628383777170. Its totient is φ = 628383777168.

The previous prime is 628383777097. The next prime is 628383777209. The reversal of 628383777169 is 961777383826.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 517169531025 + 111214246144 = 719145^2 + 333488^2 .

It is a cyclic number.

It is not a de Polignac number, because 628383777169 - 2⁷ = 628383777041 is a prime.

It is a super-2 number, since 2×628383777169² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (628383774169) 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, 314191888584 + 314191888585.

It is an arithmetic number, because the mean of its divisors is an integer number (314191888585).

Almost surely, 2^628383777169 is an apocalyptic number.

It is an amenable number.

628383777169 is a deficient number, since it is larger than the sum of its proper divisors (1).

628383777169 is an equidigital number, since it uses as much as digits as its factorization.

628383777169 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 128024064, while the sum is 67.

The spelling of 628383777169 in words is "six hundred twenty-eight billion, three hundred eighty-three million, seven hundred seventy-seven thousand, one hundred sixty-nine".