164843824454369 has 2 divisors, whose sum is σ = 164843824454370. Its totient is φ = 164843824454368.

The previous prime is 164843824454297. The next prime is 164843824454443. The reversal of 164843824454369 is 963454428348461.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 132505722498769 + 32338101955600 = 11511113^2 + 5686660^2 .

It is a cyclic number.

It is not a de Polignac number, because 164843824454369 - 2²⁸ = 164843556018913 is a prime.

It is a super-2 number, since 2×164843824454369² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (164843824450369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82421912227184 + 82421912227185.

It is an arithmetic number, because the mean of its divisors is an integer number (82421912227185).

Almost surely, 2^{164843824454369} is an apocalyptic number.

It is an amenable number.

164843824454369 is a deficient number, since it is larger than the sum of its proper divisors (1).

164843824454369 is an equidigital number, since it uses as much as digits as its factorization.

164843824454369 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1911029760, while the sum is 71.

The spelling of 164843824454369 in words is "one hundred sixty-four trillion, eight hundred forty-three billion, eight hundred twenty-four million, four hundred fifty-four thousand, three hundred sixty-nine".