43240170817049 has 2 divisors, whose sum is σ = 43240170817050. Its totient is φ = 43240170817048.

The previous prime is 43240170817037. The next prime is 43240170817139. The reversal of 43240170817049 is 94071807104234.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23130713113600 + 20109457703449 = 4809440^2 + 4484357^2 .

It is a cyclic number.

It is not a de Polignac number, because 43240170817049 - 2⁴ = 43240170817033 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 43240170816988 and 43240170817006.

It is not a weakly prime, because it can be changed into another prime (43240170817009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21620085408524 + 21620085408525.

It is an arithmetic number, because the mean of its divisors is an integer number (21620085408525).

Almost surely, 2^{43240170817049} is an apocalyptic number.

It is an amenable number.

43240170817049 is a deficient number, since it is larger than the sum of its proper divisors (1).

43240170817049 is an equidigital number, since it uses as much as digits as its factorization.

43240170817049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1354752, while the sum is 50.

The spelling of 43240170817049 in words is "forty-three trillion, two hundred forty billion, one hundred seventy million, eight hundred seventeen thousand, forty-nine".