1004543440000 has 160 divisors (see below), whose sum is σ = 2543145620400. Its totient is φ = 395005056000.

The previous prime is 1004543439989. The next prime is 1004543440003. The reversal of 1004543440000 is 443454001.

It is a tau number, because it is divible by the number of its divisors (160).

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 (1004543440003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 4613587 + ... + 4826413.

Almost surely, 2^{1004543440000} is an apocalyptic number.

1004543440000 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 1004543440000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1271572810200).

1004543440000 is an abundant number, since it is smaller than the sum of its proper divisors (1538602180400).

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

1004543440000 is an frugal number, since it uses more digits than its factorization.

1004543440000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212920 (or 212893 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

Adding to 1004543440000 its reverse (443454001), we get a palindrome (1004986894001).

The spelling of 1004543440000 in words is "one trillion, four billion, five hundred forty-three million, four hundred forty thousand".