2043321500000 has 168 divisors, whose sum is σ = 5485566190104. Its totient is φ = 743024000000.

The previous prime is 2043321499981. The next prime is 2043321500009. The reversal of 2043321500000 is 51233402.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2043321500009) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 5314244 + ... + 5685756.

It is an arithmetic number, because the mean of its divisors is an integer number (32652179703).

Almost surely, 2^{2043321500000} is an apocalyptic number.

2043321500000 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 2043321500000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2742783095052).

2043321500000 is an abundant number, since it is smaller than the sum of its proper divisors (3442244690104).

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

2043321500000 is an frugal number, since it uses more digits than its factorization.

2043321500000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371564 (or 371531 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

Adding to 2043321500000 its reverse (51233402), we get a palindrome (2043372733402).

The spelling of 2043321500000 in words is "two trillion, forty-three billion, three hundred twenty-one million, five hundred thousand".