43340321000 has 128 divisors (see below), whose sum is σ = 104567168160. Its totient is φ = 16803072000.

The previous prime is 43340320997. The next prime is 43340321029. The reversal of 43340321000 is 12304334.

It can be written as a sum of positive squares in 16 ways, for example, as 2558134084 + 40782186916 = 50578^2 + 201946^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6433634 + ... + 6440366.

Almost surely, 2^43340321000 is an apocalyptic number.

43340321000 is a gapful number since it is divisible by the number (40) 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 43340321000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52283584080).

43340321000 is an abundant number, since it is smaller than the sum of its proper divisors (61226847160).

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

43340321000 is a wasteful number, since it uses less digits than its factorization.

43340321000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6952 (or 6938 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 43340321000 its reverse (12304334), we get a palindrome (43352625334).

The spelling of 43340321000 in words is "forty-three billion, three hundred forty million, three hundred twenty-one thousand".