451213222143 has 4 divisors (see below), whose sum is σ = 601617629528. Its totient is φ = 300808814760.

The previous prime is 451213222127. The next prime is 451213222157. The reversal of 451213222143 is 341222312154.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 451213222143 - 2⁴ = 451213222127 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 451213222143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (451213222193) 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, 75202203688 + ... + 75202203693.

It is an arithmetic number, because the mean of its divisors is an integer number (150404407382).

Almost surely, 2^451213222143 is an apocalyptic number.

451213222143 is a deficient number, since it is larger than the sum of its proper divisors (150404407385).

451213222143 is a wasteful number, since it uses less digits than its factorization.

451213222143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150404407384.

The product of its digits is 11520, while the sum is 30.

Adding to 451213222143 its reverse (341222312154), we get a palindrome (792435534297).

The spelling of 451213222143 in words is "four hundred fifty-one billion, two hundred thirteen million, two hundred twenty-two thousand, one hundred forty-three".