451516431611603 has 4 divisors (see below), whose sum is σ = 455512152245448. Its totient is φ = 447520710977760.

The previous prime is 451516431611471. The next prime is 451516431611633. The reversal of 451516431611603 is 306116134615154.

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

It is a cyclic number.

It is not a de Polignac number, because 451516431611603 - 2⁸ = 451516431611347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (451516431611633) 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, 1997860316753 + ... + 1997860316978.

It is an arithmetic number, because the mean of its divisors is an integer number (113878038061362).

Almost surely, 2^{451516431611603} is an apocalyptic number.

451516431611603 is a deficient number, since it is larger than the sum of its proper divisors (3995720633845).

451516431611603 is a wasteful number, since it uses less digits than its factorization.

451516431611603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3995720633844.

The product of its (nonzero) digits is 777600, while the sum is 47.

The spelling of 451516431611603 in words is "four hundred fifty-one trillion, five hundred sixteen billion, four hundred thirty-one million, six hundred eleven thousand, six hundred three".