450001232543 has 4 divisors (see below), whose sum is σ = 473685507960. Its totient is φ = 426316957128.

The previous prime is 450001232539. The next prime is 450001232567. The reversal of 450001232543 is 345232100054.

It is a happy number.

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 450001232543 - 2² = 450001232539 is a prime.

It is a super-2 number, since 2×450001232543² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (450001132543) 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, 11842137680 + ... + 11842137717.

It is an arithmetic number, because the mean of its divisors is an integer number (118421376990).

Almost surely, 2^450001232543 is an apocalyptic number.

450001232543 is a deficient number, since it is larger than the sum of its proper divisors (23684275417).

450001232543 is a wasteful number, since it uses less digits than its factorization.

450001232543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23684275416.

The product of its (nonzero) digits is 14400, while the sum is 29.

Adding to 450001232543 its reverse (345232100054), we get a palindrome (795233332597).

The spelling of 450001232543 in words is "four hundred fifty billion, one million, two hundred thirty-two thousand, five hundred forty-three".