451442544313 has 4 divisors (see below), whose sum is σ = 451444192128. Its totient is φ = 451440896500.

The previous prime is 451442544263. The next prime is 451442544331. The reversal of 451442544313 is 313445244154.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-451442544313 is a prime.

It is a super-4 number, since 4×451442544313⁴ (a number of 48 digits) contains 4444 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (451442554313) 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, 303313 + ... + 997438.

It is an arithmetic number, because the mean of its divisors is an integer number (112861048032).

Almost surely, 2^451442544313 is an apocalyptic number.

It is an amenable number.

451442544313 is a deficient number, since it is larger than the sum of its proper divisors (1647815).

451442544313 is a wasteful number, since it uses less digits than its factorization.

451442544313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1647814.

The product of its digits is 460800, while the sum is 40.

Adding to 451442544313 its reverse (313445244154), we get a palindrome (764887788467).

The spelling of 451442544313 in words is "four hundred fifty-one billion, four hundred forty-two million, five hundred forty-four thousand, three hundred thirteen".