320055533543 has 4 divisors (see below), whose sum is σ = 320372735280. Its totient is φ = 319738331808.

The previous prime is 320055533537. The next prime is 320055533573. The reversal of 320055533543 is 345335550023.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 320055533543 - 2⁴ = 320055533527 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 320055533497 and 320055533506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320055533573) 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 3 ways as a sum of consecutive naturals, for example, 158599355 + ... + 158601372.

It is an arithmetic number, because the mean of its divisors is an integer number (80093183820).

Almost surely, 2^320055533543 is an apocalyptic number.

320055533543 is a deficient number, since it is larger than the sum of its proper divisors (317201737).

320055533543 is a wasteful number, since it uses less digits than its factorization.

320055533543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317201736.

The product of its (nonzero) digits is 405000, while the sum is 38.

The spelling of 320055533543 in words is "three hundred twenty billion, fifty-five million, five hundred thirty-three thousand, five hundred forty-three".