451821875558401 has 4 divisors (see below), whose sum is σ = 451832662285312. Its totient is φ = 451811088831492.

The previous prime is 451821875558359. The next prime is 451821875558519. The reversal of 451821875558401 is 104855578128154.

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 not a de Polignac number, because 451821875558401 - 2³¹ = 451819728074753 is a prime.

It is a super-2 number, since 2×451821875558401² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (451821875558101) 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, 5393300625 + ... + 5393384398.

It is an arithmetic number, because the mean of its divisors is an integer number (112958165571328).

Almost surely, 2^{451821875558401} is an apocalyptic number.

It is an amenable number.

451821875558401 is a deficient number, since it is larger than the sum of its proper divisors (10786726911).

451821875558401 is a wasteful number, since it uses less digits than its factorization.

451821875558401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10786726910.

The product of its (nonzero) digits is 71680000, while the sum is 64.

The spelling of 451821875558401 in words is "four hundred fifty-one trillion, eight hundred twenty-one billion, eight hundred seventy-five million, five hundred fifty-eight thousand, four hundred one".