43143421105397 has 2 divisors, whose sum is σ = 43143421105398. Its totient is φ = 43143421105396.

The previous prime is 43143421105381. The next prime is 43143421105417. The reversal of 43143421105397 is 79350112434134.

43143421105397 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43070947619716 + 72473485681 = 6562846^2 + 269209^2 .

It is a cyclic number.

It is not a de Polignac number, because 43143421105397 - 2⁴ = 43143421105381 is a prime.

It is a super-2 number, since 2×43143421105397² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43143421105307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21571710552698 + 21571710552699.

It is an arithmetic number, because the mean of its divisors is an integer number (21571710552699).

Almost surely, 2^{43143421105397} is an apocalyptic number.

It is an amenable number.

43143421105397 is a deficient number, since it is larger than the sum of its proper divisors (1).

43143421105397 is an equidigital number, since it uses as much as digits as its factorization.

43143421105397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1088640, while the sum is 47.

The spelling of 43143421105397 in words is "forty-three trillion, one hundred forty-three billion, four hundred twenty-one million, one hundred five thousand, three hundred ninety-seven".