451203545243 has 4 divisors (see below), whose sum is σ = 492222049368. Its totient is φ = 410185041120.

The previous prime is 451203545203. The next prime is 451203545293. The reversal of 451203545243 is 342545302154.

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 451203545243 - 2¹⁶ = 451203479707 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 451203545197 and 451203545206.

It is not an unprimeable number, because it can be changed into a prime (451203545203) 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, 20509252046 + ... + 20509252067.

It is an arithmetic number, because the mean of its divisors is an integer number (123055512342).

Almost surely, 2^451203545243 is an apocalyptic number.

451203545243 is a deficient number, since it is larger than the sum of its proper divisors (41018504125).

451203545243 is a wasteful number, since it uses less digits than its factorization.

451203545243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41018504124.

The product of its (nonzero) digits is 288000, while the sum is 38.

Adding to 451203545243 its reverse (342545302154), we get a palindrome (793748847397).

The spelling of 451203545243 in words is "four hundred fifty-one billion, two hundred three million, five hundred forty-five thousand, two hundred forty-three".