451026623116643 has 4 divisors (see below), whose sum is σ = 515458997847600. Its totient is φ = 386594248385688.

The previous prime is 451026623116639. The next prime is 451026623116703. The reversal of 451026623116643 is 346611326620154.

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 451026623116643 - 2² = 451026623116639 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 451026623116591 and 451026623116600.

It is not an unprimeable number, because it can be changed into a prime (451026623116243) 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, 32216187365468 + ... + 32216187365481.

It is an arithmetic number, because the mean of its divisors is an integer number (128864749461900).

Almost surely, 2^{451026623116643} is an apocalyptic number.

451026623116643 is a deficient number, since it is larger than the sum of its proper divisors (64432374730957).

451026623116643 is an equidigital number, since it uses as much as digits as its factorization.

451026623116643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64432374730956.

The product of its (nonzero) digits is 3732480, while the sum is 50.

Adding to 451026623116643 its reverse (346611326620154), we get a palindrome (797637949736797).

The spelling of 451026623116643 in words is "four hundred fifty-one trillion, twenty-six billion, six hundred twenty-three million, one hundred sixteen thousand, six hundred forty-three".