43628228346397 has 2 divisors, whose sum is σ = 43628228346398. Its totient is φ = 43628228346396.

The previous prime is 43628228346341. The next prime is 43628228346419. The reversal of 43628228346397 is 79364382282634.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40628054472196 + 3000173874201 = 6374014^2 + 1732101^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43628228346397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43628228344397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21814114173198 + 21814114173199.

It is an arithmetic number, because the mean of its divisors is an integer number (21814114173199).

Almost surely, 2^{43628228346397} is an apocalyptic number.

It is an amenable number.

43628228346397 is a deficient number, since it is larger than the sum of its proper divisors (1).

43628228346397 is an equidigital number, since it uses as much as digits as its factorization.

43628228346397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 501645312, while the sum is 67.

The spelling of 43628228346397 in words is "forty-three trillion, six hundred twenty-eight billion, two hundred twenty-eight million, three hundred forty-six thousand, three hundred ninety-seven".