452121320500000 has 84 divisors (see below), whose sum is σ = 1112628071576826. Its totient is φ = 180848528000000.

The previous prime is 452121320499971. The next prime is 452121320500007. The reversal of 452121320500000 is 5023121254.

It can be written as a sum of positive squares in 7 ways, for example, as 286675150442256 + 165446170057744 = 16931484^2 + 12862588^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (452121320500007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 451621321 + ... + 452621320.

Almost surely, 2^{452121320500000} is an apocalyptic number.

452121320500000 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

452121320500000 is an abundant number, since it is smaller than the sum of its proper divisors (660506751076826).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

452121320500000 is an frugal number, since it uses more digits than its factorization.

452121320500000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 904242681 (or 904242648 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

Adding to 452121320500000 its reverse (5023121254), we get a palindrome (452126343621254).

The spelling of 452121320500000 in words is "four hundred fifty-two trillion, one hundred twenty-one billion, three hundred twenty million, five hundred thousand".