4243324043437 has 2 divisors, whose sum is σ = 4243324043438. Its totient is φ = 4243324043436.

The previous prime is 4243324043389. The next prime is 4243324043447. The reversal of 4243324043437 is 7343404233424.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4237117597476 + 6206445961 = 2058426^2 + 78781^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4243324043437 is a prime.

It is a super-2 number, since 2×4243324043437² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 4243324043393 and 4243324043402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4243324043447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2121662021718 + 2121662021719.

It is an arithmetic number, because the mean of its divisors is an integer number (2121662021719).

Almost surely, 2^{4243324043437} is an apocalyptic number.

It is an amenable number.

4243324043437 is a deficient number, since it is larger than the sum of its proper divisors (1).

4243324043437 is an equidigital number, since it uses as much as digits as its factorization.

4243324043437 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2322432, while the sum is 43.

The spelling of 4243324043437 in words is "four trillion, two hundred forty-three billion, three hundred twenty-four million, forty-three thousand, four hundred thirty-seven".