451043623505 has 16 divisors (see below), whose sum is σ = 545892804864. Its totient is φ = 357754456320.

The previous prime is 451043623453. The next prime is 451043623523. The reversal of 451043623505 is 505326340154.

It is not a de Polignac number, because 451043623505 - 2²⁴ = 451026846289 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 550937 + ... + 1098006.

It is an arithmetic number, because the mean of its divisors is an integer number (34118300304).

Almost surely, 2^451043623505 is an apocalyptic number.

It is an amenable number.

451043623505 is a deficient number, since it is larger than the sum of its proper divisors (94849181359).

451043623505 is a wasteful number, since it uses less digits than its factorization.

451043623505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1649416.

The product of its (nonzero) digits is 216000, while the sum is 38.

Adding to 451043623505 its reverse (505326340154), we get a palindrome (956369963659).

The spelling of 451043623505 in words is "four hundred fifty-one billion, forty-three million, six hundred twenty-three thousand, five hundred five".