2143421544000 has 448 divisors, whose sum is σ = 7929705768192. Its totient is φ = 505571328000.

The previous prime is 2143421543999. The next prime is 2143421544049. The reversal of 2143421544000 is 4451243412.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 9658284 + ... + 9877716.

Almost surely, 2^{2143421544000} is an apocalyptic number.

2143421544000 is a gapful number since it is divisible by the number (20) 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 2143421544000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3964852884096).

2143421544000 is an abundant number, since it is smaller than the sum of its proper divisors (5786284224192).

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

2143421544000 is a wasteful number, since it uses less digits than its factorization.

2143421544000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219511 (or 219491 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 30.

Adding to 2143421544000 its reverse (4451243412), we get a palindrome (2147872787412).

The spelling of 2143421544000 in words is "two trillion, one hundred forty-three billion, four hundred twenty-one million, five hundred forty-four thousand".