451221351233 has 4 divisors (see below), whose sum is σ = 451236337860. Its totient is φ = 451206364608.

The previous prime is 451221351223. The next prime is 451221351241. The reversal of 451221351233 is 332153122154.

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 270678791824 + 180542559409 = 520268^2 + 424903^2 .

It is a cyclic number.

It is not a de Polignac number, because 451221351233 - 2²⁴ = 451204574017 is a prime.

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 451221351233.

It is not an unprimeable number, because it can be changed into a prime (451221351223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7448060 + ... + 7508397.

It is an arithmetic number, because the mean of its divisors is an integer number (112809084465).

Almost surely, 2^451221351233 is an apocalyptic number.

It is an amenable number.

451221351233 is a deficient number, since it is larger than the sum of its proper divisors (14986627).

451221351233 is a wasteful number, since it uses less digits than its factorization.

451221351233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14986626.

The product of its digits is 21600, while the sum is 32.

Adding to 451221351233 its reverse (332153122154), we get a palindrome (783374473387).

The spelling of 451221351233 in words is "four hundred fifty-one billion, two hundred twenty-one million, three hundred fifty-one thousand, two hundred thirty-three".