628161066469 has 2 divisors, whose sum is σ = 628161066470. Its totient is φ = 628161066468.

The previous prime is 628161066397. The next prime is 628161066517. The reversal of 628161066469 is 964660161826.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 504010543969 + 124150522500 = 709937^2 + 352350^2 .

It is a cyclic number.

It is not a de Polignac number, because 628161066469 - 2¹⁹ = 628160542181 is a prime.

It is a super-2 number, since 2×628161066469² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (628161096469) 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, 314080533234 + 314080533235.

It is an arithmetic number, because the mean of its divisors is an integer number (314080533235).

Almost surely, 2^628161066469 is an apocalyptic number.

It is an amenable number.

628161066469 is a deficient number, since it is larger than the sum of its proper divisors (1).

628161066469 is an equidigital number, since it uses as much as digits as its factorization.

628161066469 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4478976, while the sum is 55.

The spelling of 628161066469 in words is "six hundred twenty-eight billion, one hundred sixty-one million, sixty-six thousand, four hundred sixty-nine".