8400743821343 has 4 divisors (see below), whose sum is σ = 8400752856648. Its totient is φ = 8400734786040.

The previous prime is 8400743821333. The next prime is 8400743821357. The reversal of 8400743821343 is 3431283470048.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 8400743821343 - 2¹⁰ = 8400743820319 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 (8400743821333) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2939153 + ... + 5043818.

It is an arithmetic number, because the mean of its divisors is an integer number (2100188214162).

Almost surely, 2^{8400743821343} is an apocalyptic number.

8400743821343 is a deficient number, since it is larger than the sum of its proper divisors (9035305).

8400743821343 is a wasteful number, since it uses less digits than its factorization.

8400743821343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9035304.

The product of its (nonzero) digits is 1548288, while the sum is 47.

The spelling of 8400743821343 in words is "eight trillion, four hundred billion, seven hundred forty-three million, eight hundred twenty-one thousand, three hundred forty-three".