543423233321534 has 4 divisors (see below), whose sum is σ = 815134849982304. Its totient is φ = 271711616660766.

The previous prime is 543423233321453. The next prime is 543423233321537. The reversal of 543423233321534 is 435123332324345.

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

It is a super-2 number, since 2×543423233321534² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (543423233321537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 135855808330382 + ... + 135855808330385.

It is an arithmetic number, because the mean of its divisors is an integer number (203783712495576).

Almost surely, 2^{543423233321534} is an apocalyptic number.

543423233321534 is a deficient number, since it is larger than the sum of its proper divisors (271711616660770).

543423233321534 is a wasteful number, since it uses less digits than its factorization.

543423233321534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271711616660769.

The product of its digits is 9331200, while the sum is 47.

Adding to 543423233321534 its reverse (435123332324345), we get a palindrome (978546565645879).

The spelling of 543423233321534 in words is "five hundred forty-three trillion, four hundred twenty-three billion, two hundred thirty-three million, three hundred twenty-one thousand, five hundred thirty-four".