451640520324503 has 4 divisors (see below), whose sum is σ = 451640567572488. Its totient is φ = 451640473076520.

The previous prime is 451640520324451. The next prime is 451640520324527. The reversal of 451640520324503 is 305423025046154.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 451640520324503 - 2¹⁰ = 451640520323479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (451640520324583) 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, 3664376 + ... + 30277197.

It is an arithmetic number, because the mean of its divisors is an integer number (112910141893122).

Almost surely, 2^{451640520324503} is an apocalyptic number.

451640520324503 is a deficient number, since it is larger than the sum of its proper divisors (47247985).

451640520324503 is a wasteful number, since it uses less digits than its factorization.

451640520324503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47247984.

The product of its (nonzero) digits is 1728000, while the sum is 44.

The spelling of 451640520324503 in words is "four hundred fifty-one trillion, six hundred forty billion, five hundred twenty million, three hundred twenty-four thousand, five hundred three".