450578320811005 has 4 divisors (see below), whose sum is σ = 540693984973212. Its totient is φ = 360462656648800.

The previous prime is 450578320810999. The next prime is 450578320811009. The reversal of 450578320811005 is 500118023875054.

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

It can be written as a sum of positive squares in 2 ways, for example, as 345901747252356 + 104676573558649 = 18598434^2 + 10231157^2 .

It is not a de Polignac number, because 450578320811005 - 2³ = 450578320810997 is a prime.

It is a super-2 number, since 2×450578320811005² (a number of 30 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 450578320811005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (450578320811009) 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, 45057832081096 + ... + 45057832081105.

It is an arithmetic number, because the mean of its divisors is an integer number (135173496243303).

Almost surely, 2^{450578320811005} is an apocalyptic number.

It is an amenable number.

450578320811005 is a deficient number, since it is larger than the sum of its proper divisors (90115664162207).

450578320811005 is an equidigital number, since it uses as much as digits as its factorization.

450578320811005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90115664162206.

The product of its (nonzero) digits is 1344000, while the sum is 49.

The spelling of 450578320811005 in words is "four hundred fifty trillion, five hundred seventy-eight billion, three hundred twenty million, eight hundred eleven thousand, five".