451145533505 has 4 divisors (see below), whose sum is σ = 541374640212. Its totient is φ = 360916426800.

The previous prime is 451145533493. The next prime is 451145533507. The reversal of 451145533505 is 505335541154.

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

It can be written as a sum of positive squares in 2 ways, for example, as 86869309696 + 364276223809 = 294736^2 + 603553^2 .

It is not a de Polignac number, because 451145533505 - 2¹² = 451145529409 is a prime.

It is a super-2 number, since 2×451145533505² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (451145533507) 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, 45114553346 + ... + 45114553355.

It is an arithmetic number, because the mean of its divisors is an integer number (135343660053).

Almost surely, 2^451145533505 is an apocalyptic number.

It is an amenable number.

451145533505 is a deficient number, since it is larger than the sum of its proper divisors (90229106707).

451145533505 is an equidigital number, since it uses as much as digits as its factorization.

451145533505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90229106706.

The product of its (nonzero) digits is 450000, while the sum is 41.

The spelling of 451145533505 in words is "four hundred fifty-one billion, one hundred forty-five million, five hundred thirty-three thousand, five hundred five".