1243133325000 has 2304 divisors, whose sum is σ = 5503327764480. Its totient is φ = 256608000000.

The previous prime is 1243133324989. The next prime is 1243133325013. The reversal of 1243133325000 is 5233313421.

1243133325000 is a `hidden beast` number, since 1 + 24 + 3 + 133 + 3 + 2 + 500 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 575 ways as a sum of consecutive naturals, for example, 30320324980 + ... + 30320325020.

It is an arithmetic number, because the mean of its divisors is an integer number (2388597120).

Almost surely, 2^{1243133325000} is an apocalyptic number.

1243133325000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1243133325000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2751663882240).

1243133325000 is an abundant number, since it is smaller than the sum of its proper divisors (4260194439480).

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

1243133325000 is an equidigital number, since it uses as much as digits as its factorization.

1243133325000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148 (or 112 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 27.

Adding to 1243133325000 its reverse (5233313421), we get a palindrome (1248366638421).

The spelling of 1243133325000 in words is "one trillion, two hundred forty-three billion, one hundred thirty-three million, three hundred twenty-five thousand".