2043661320000 has 1120 divisors, whose sum is σ = 8106989932800. Its totient is φ = 503129088000.

The previous prime is 2043661319983. The next prime is 2043661320013. The reversal of 2043661320000 is 231663402.

2043661320000 is a `hidden beast` number, since 2 + 0 + 43 + 6 + 613 + 2 + 0 + 0 + 0 + 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 159 ways as a sum of consecutive naturals, for example, 720358582 + ... + 720361418.

Almost surely, 2^{2043661320000} is an apocalyptic number.

2043661320000 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 2043661320000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4053494966400).

2043661320000 is an abundant number, since it is smaller than the sum of its proper divisors (6063328612800).

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

2043661320000 is a wasteful number, since it uses less digits than its factorization.

2043661320000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2930 (or 2899 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

Adding to 2043661320000 its reverse (231663402), we get a palindrome (2043892983402).

The spelling of 2043661320000 in words is "two trillion, forty-three billion, six hundred sixty-one million, three hundred twenty thousand".