164843824454443 has 2 divisors, whose sum is σ = 164843824454444. Its totient is φ = 164843824454442.

The previous prime is 164843824454369. The next prime is 164843824454461. The reversal of 164843824454443 is 344454428348461.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 164843824454443 - 2²⁹ = 164843287583531 is a prime.

It is not a weakly prime, because it can be changed into another prime (164843824454843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82421912227221 + 82421912227222.

It is an arithmetic number, because the mean of its divisors is an integer number (82421912227222).

Almost surely, 2^{164843824454443} is an apocalyptic number.

164843824454443 is a deficient number, since it is larger than the sum of its proper divisors (1).

164843824454443 is an equidigital number, since it uses as much as digits as its factorization.

164843824454443 is an evil number, because the sum of its binary digits is even.

The product of its digits is 566231040, while the sum is 64.

The spelling of 164843824454443 in words is "one hundred sixty-four trillion, eight hundred forty-three billion, eight hundred twenty-four million, four hundred fifty-four thousand, four hundred forty-three".