450161230165 has 4 divisors (see below), whose sum is σ = 540193476204. Its totient is φ = 360128984128.

The previous prime is 450161230163. The next prime is 450161230199. The reversal of 450161230165 is 561032161054.

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 235456887121 + 214704343044 = 485239^2 + 463362^2 .

It is a cyclic number.

It is not a de Polignac number, because 450161230165 - 2¹ = 450161230163 is a prime.

It is a super-2 number, since 2×450161230165² (a number of 24 digits) contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

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 450161230165.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (450161230163) 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, 45016123012 + ... + 45016123021.

It is an arithmetic number, because the mean of its divisors is an integer number (135048369051).

Almost surely, 2^450161230165 is an apocalyptic number.

It is an amenable number.

450161230165 is a deficient number, since it is larger than the sum of its proper divisors (90032246039).

450161230165 is an equidigital number, since it uses as much as digits as its factorization.

450161230165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90032246038.

The product of its (nonzero) digits is 21600, while the sum is 34.

The spelling of 450161230165 in words is "four hundred fifty billion, one hundred sixty-one million, two hundred thirty thousand, one hundred sixty-five".