43340380823621 has 12 divisors (see below), whose sum is σ = 50416524368640. Its totient is φ = 37148777741880.

The previous prime is 43340380823567. The next prime is 43340380823657. The reversal of 43340380823621 is 12632808304334.

It is not a de Polignac number, because 43340380823621 - 2¹⁸ = 43340380561477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43340380823681) 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 11 ways as a sum of consecutive naturals, for example, 16035290 + ... + 18542148.

It is an arithmetic number, because the mean of its divisors is an integer number (4201377030720).

Almost surely, 2^{43340380823621} is an apocalyptic number.

It is an amenable number.

43340380823621 is a deficient number, since it is larger than the sum of its proper divisors (7076143545019).

43340380823621 is a wasteful number, since it uses less digits than its factorization.

43340380823621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2859704 (or 2859697 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 47.

The spelling of 43340380823621 in words is "forty-three trillion, three hundred forty billion, three hundred eighty million, eight hundred twenty-three thousand, six hundred twenty-one".