43400072717213 has 2 divisors, whose sum is σ = 43400072717214. Its totient is φ = 43400072717212.

The previous prime is 43400072717173. The next prime is 43400072717219. The reversal of 43400072717213 is 31271727000434.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26231165559769 + 17168907157444 = 5121637^2 + 4143538^2 .

It is a cyclic number.

It is not a de Polignac number, because 43400072717213 - 2³⁶ = 43331353240477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43400072717219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21700036358606 + 21700036358607.

It is an arithmetic number, because the mean of its divisors is an integer number (21700036358607).

Almost surely, 2^{43400072717213} is an apocalyptic number.

It is an amenable number.

43400072717213 is a deficient number, since it is larger than the sum of its proper divisors (1).

43400072717213 is an equidigital number, since it uses as much as digits as its factorization.

43400072717213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 197568, while the sum is 41.

Adding to 43400072717213 its reverse (31271727000434), we get a palindrome (74671799717647).

The spelling of 43400072717213 in words is "forty-three trillion, four hundred billion, seventy-two million, seven hundred seventeen thousand, two hundred thirteen".