543424436371421 has 4 divisors (see below), whose sum is σ = 592826657859744. Its totient is φ = 494022214883100.

The previous prime is 543424436371367. The next prime is 543424436371429. The reversal of 543424436371421 is 124173634424345.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 543424436371421 - 2⁶ = 543424436371357 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (543424436371429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (37) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24701110744145 + ... + 24701110744166.

It is an arithmetic number, because the mean of its divisors is an integer number (148206664464936).

Almost surely, 2^{543424436371421} is an apocalyptic number.

It is an amenable number.

543424436371421 is a deficient number, since it is larger than the sum of its proper divisors (49402221488323).

543424436371421 is a wasteful number, since it uses less digits than its factorization.

543424436371421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49402221488322.

The product of its digits is 23224320, while the sum is 53.

The spelling of 543424436371421 in words is "five hundred forty-three trillion, four hundred twenty-four billion, four hundred thirty-six million, three hundred seventy-one thousand, four hundred twenty-one".