43212340517 has 2 divisors, whose sum is σ = 43212340518. Its totient is φ = 43212340516.

The previous prime is 43212340481. The next prime is 43212340529. The reversal of 43212340517 is 71504321234.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41322351841 + 1889988676 = 203279^2 + 43474^2 .

It is a cyclic number.

It is not a de Polignac number, because 43212340517 - 2⁸ = 43212340261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43212340597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21606170258 + 21606170259.

It is an arithmetic number, because the mean of its divisors is an integer number (21606170259).

Almost surely, 2^43212340517 is an apocalyptic number.

It is an amenable number.

43212340517 is a deficient number, since it is larger than the sum of its proper divisors (1).

43212340517 is an equidigital number, since it uses as much as digits as its factorization.

43212340517 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20160, while the sum is 32.

The spelling of 43212340517 in words is "forty-three billion, two hundred twelve million, three hundred forty thousand, five hundred seventeen".