164843824454399 has 16 divisors (see below), whose sum is σ = 168857057597184. Its totient is φ = 160838769235200.

The previous prime is 164843824454369. The next prime is 164843824454443. The reversal of 164843824454399 is 993454428348461.

It is a cyclic number.

It is not a de Polignac number, because 164843824454399 - 2²⁰ = 164843823405823 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164843824454369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1664350319 + ... + 1664449359.

It is an arithmetic number, because the mean of its divisors is an integer number (10553566099824).

Almost surely, 2^{164843824454399} is an apocalyptic number.

164843824454399 is a deficient number, since it is larger than the sum of its proper divisors (4013233142785).

164843824454399 is an equidigital number, since it uses as much as digits as its factorization.

164843824454399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139918.

The product of its digits is 2866544640, while the sum is 74.

The spelling of 164843824454399 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 ninety-nine".