451216321233 has 16 divisors (see below), whose sum is σ = 618198806016. Its totient is φ = 292530700800.

The previous prime is 451216321223. The next prime is 451216321247. The reversal of 451216321233 is 332123612154.

It is not a de Polignac number, because 451216321233 - 2²⁸ = 450947885777 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 451216321194 and 451216321203.

It is not an unprimeable number, because it can be changed into a prime (451216321223) 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 15 ways as a sum of consecutive naturals, for example, 825216 + ... + 1258337.

It is an arithmetic number, because the mean of its divisors is an integer number (38637425376).

Almost surely, 2^451216321233 is an apocalyptic number.

It is an amenable number.

451216321233 is a deficient number, since it is larger than the sum of its proper divisors (166982484783).

451216321233 is a wasteful number, since it uses less digits than its factorization.

451216321233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2085544.

The product of its digits is 25920, while the sum is 33.

Adding to 451216321233 its reverse (332123612154), we get a palindrome (783339933387).

The spelling of 451216321233 in words is "four hundred fifty-one billion, two hundred sixteen million, three hundred twenty-one thousand, two hundred thirty-three".