675408220169 has 2 divisors, whose sum is σ = 675408220170. Its totient is φ = 675408220168.

The previous prime is 675408220163. The next prime is 675408220189. The reversal of 675408220169 is 961022804576.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 497314092025 + 178094128144 = 705205^2 + 422012^2 .

It is a cyclic number.

It is not a de Polignac number, because 675408220169 - 2²⁸ = 675139784713 is a prime.

It is a super-2 number, since 2×675408220169² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (675408220163) 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, 337704110084 + 337704110085.

It is an arithmetic number, because the mean of its divisors is an integer number (337704110085).

Almost surely, 2^675408220169 is an apocalyptic number.

It is an amenable number.

675408220169 is a deficient number, since it is larger than the sum of its proper divisors (1).

675408220169 is an equidigital number, since it uses as much as digits as its factorization.

675408220169 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1451520, while the sum is 50.

The spelling of 675408220169 in words is "six hundred seventy-five billion, four hundred eight million, two hundred twenty thousand, one hundred sixty-nine".