43421577548543 has 4 divisors (see below), whose sum is σ = 44822273598528. Its totient is φ = 42020881498560.

The previous prime is 43421577548539. The next prime is 43421577548581. The reversal of 43421577548543 is 34584577512434.

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 43421577548543 - 2² = 43421577548539 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43421577548593) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 700348024946 + ... + 700348025007.

It is an arithmetic number, because the mean of its divisors is an integer number (11205568399632).

Almost surely, 2^{43421577548543} is an apocalyptic number.

43421577548543 is a deficient number, since it is larger than the sum of its proper divisors (1400696049985).

43421577548543 is a wasteful number, since it uses less digits than its factorization.

43421577548543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1400696049984.

The product of its digits is 225792000, while the sum is 62.

The spelling of 43421577548543 in words is "forty-three trillion, four hundred twenty-one billion, five hundred seventy-seven million, five hundred forty-eight thousand, five hundred forty-three".