43605791854349 has 2 divisors, whose sum is σ = 43605791854350. Its totient is φ = 43605791854348.

The previous prime is 43605791854253. The next prime is 43605791854357. The reversal of 43605791854349 is 94345819750634.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33327471270025 + 10278320584324 = 5772995^2 + 3205982^2 .

It is a cyclic number.

It is not a de Polignac number, because 43605791854349 - 2¹⁶ = 43605791788813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43605791854399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21802895927174 + 21802895927175.

It is an arithmetic number, because the mean of its divisors is an integer number (21802895927175).

Almost surely, 2^{43605791854349} is an apocalyptic number.

It is an amenable number.

43605791854349 is a deficient number, since it is larger than the sum of its proper divisors (1).

43605791854349 is an equidigital number, since it uses as much as digits as its factorization.

43605791854349 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 391910400, while the sum is 68.

The spelling of 43605791854349 in words is "forty-three trillion, six hundred five billion, seven hundred ninety-one million, eight hundred fifty-four thousand, three hundred forty-nine".