445016561423543 has 4 divisors (see below), whose sum is σ = 445030852747320. Its totient is φ = 445002270099768.

The previous prime is 445016561423513. The next prime is 445016561423549. The reversal of 445016561423543 is 345324165610544.

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 445016561423543 - 2¹⁰ = 445016561422519 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 (445016561423549) 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, 7145615180 + ... + 7145677457.

It is an arithmetic number, because the mean of its divisors is an integer number (111257713186830).

Almost surely, 2^{445016561423543} is an apocalyptic number.

445016561423543 is a deficient number, since it is larger than the sum of its proper divisors (14291323777).

445016561423543 is a wasteful number, since it uses less digits than its factorization.

445016561423543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14291323776.

The product of its (nonzero) digits is 20736000, while the sum is 53.

The spelling of 445016561423543 in words is "four hundred forty-five trillion, sixteen billion, five hundred sixty-one million, four hundred twenty-three thousand, five hundred forty-three".