43243344373 has 2 divisors, whose sum is σ = 43243344374. Its totient is φ = 43243344372.

The previous prime is 43243344359. The next prime is 43243344401. The reversal of 43243344373 is 37344334234.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38424624484 + 4818719889 = 196022^2 + 69417^2 .

It is a cyclic number.

It is not a de Polignac number, because 43243344373 - 2¹³ = 43243336181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43243344173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21621672186 + 21621672187.

It is an arithmetic number, because the mean of its divisors is an integer number (21621672187).

Almost surely, 2^43243344373 is an apocalyptic number.

It is an amenable number.

43243344373 is a deficient number, since it is larger than the sum of its proper divisors (1).

43243344373 is an equidigital number, since it uses as much as digits as its factorization.

43243344373 is an evil number, because the sum of its binary digits is even.

The product of its digits is 870912, while the sum is 40.

The spelling of 43243344373 in words is "forty-three billion, two hundred forty-three million, three hundred forty-four thousand, three hundred seventy-three".