423855167069 has 2 divisors, whose sum is σ = 423855167070. Its totient is φ = 423855167068.

The previous prime is 423855167063. The next prime is 423855167081. The reversal of 423855167069 is 960761558324.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 411746805625 + 12108361444 = 641675^2 + 110038^2 .

It is a cyclic number.

It is not a de Polignac number, because 423855167069 - 2¹⁶ = 423855101533 is a prime.

It is a super-2 number, since 2×423855167069² (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 (423855167063) 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, 211927583534 + 211927583535.

It is an arithmetic number, because the mean of its divisors is an integer number (211927583535).

It is a 1-persistent number, because it is pandigital, but 2⋅423855167069 = 847710334138 is not.

Almost surely, 2^423855167069 is an apocalyptic number.

It is an amenable number.

423855167069 is a deficient number, since it is larger than the sum of its proper divisors (1).

423855167069 is an equidigital number, since it uses as much as digits as its factorization.

423855167069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10886400, while the sum is 56.

The spelling of 423855167069 in words is "four hundred twenty-three billion, eight hundred fifty-five million, one hundred sixty-seven thousand, sixty-nine".