320443544430243 has 12 divisors (see below), whose sum is σ = 498467735780560. Its totient is φ = 197196027341616.

The previous prime is 320443544430221. The next prime is 320443544430301. The reversal of 320443544430243 is 342034445344023.

320443544430243 is a `hidden beast` number, since 3 + 2 + 0 + 4 + 43 + 544 + 43 + 0 + 24 + 3 = 666.

It is not a de Polignac number, because 320443544430243 - 2¹³ = 320443544422051 is a prime.

It is a super-3 number, since 3×320443544430243³ (a number of 44 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (320443544432243) 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 in 11 ways as a sum of consecutive naturals, for example, 1369416856423 + ... + 1369416856656.

Almost surely, 2^{320443544430243} is an apocalyptic number.

320443544430243 is a deficient number, since it is larger than the sum of its proper divisors (178024191350317).

320443544430243 is a wasteful number, since it uses less digits than its factorization.

320443544430243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2738833713098 (or 2738833713095 counting only the distinct ones).

The product of its (nonzero) digits is 6635520, while the sum is 45.

Adding to 320443544430243 its reverse (342034445344023), we get a palindrome (662477989774266).

The spelling of 320443544430243 in words is "three hundred twenty trillion, four hundred forty-three billion, five hundred forty-four million, four hundred thirty thousand, two hundred forty-three".