43213440427 has 2 divisors, whose sum is σ = 43213440428. Its totient is φ = 43213440426.

The previous prime is 43213440409. The next prime is 43213440461. The reversal of 43213440427 is 72404431234.

It is an a-pointer prime, because the next prime (43213440461) can be obtained adding 43213440427 to its sum of digits (34).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 43213440427 - 2²⁷ = 43079222699 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 43213440392 and 43213440401.

It is not a weakly prime, because it can be changed into another prime (43213440407) 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 as a sum of consecutive naturals, namely, 21606720213 + 21606720214.

It is an arithmetic number, because the mean of its divisors is an integer number (21606720214).

Almost surely, 2^43213440427 is an apocalyptic number.

43213440427 is a deficient number, since it is larger than the sum of its proper divisors (1).

43213440427 is an equidigital number, since it uses as much as digits as its factorization.

43213440427 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64512, while the sum is 34.

The spelling of 43213440427 in words is "forty-three billion, two hundred thirteen million, four hundred forty thousand, four hundred twenty-seven".