43036353649 has 2 divisors, whose sum is σ = 43036353650. Its totient is φ = 43036353648.

The previous prime is 43036353623. The next prime is 43036353667. The reversal of 43036353649 is 94635363034.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29788343649 + 13248010000 = 172593^2 + 115100^2 .

It is a cyclic number.

It is not a de Polignac number, because 43036353649 - 2⁹ = 43036353137 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 43036353599 and 43036353608.

It is not a weakly prime, because it can be changed into another prime (43036353449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21518176824 + 21518176825.

It is an arithmetic number, because the mean of its divisors is an integer number (21518176825).

Almost surely, 2^43036353649 is an apocalyptic number.

It is an amenable number.

43036353649 is a deficient number, since it is larger than the sum of its proper divisors (1).

43036353649 is an equidigital number, since it uses as much as digits as its factorization.

43036353649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2099520, while the sum is 46.

The spelling of 43036353649 in words is "forty-three billion, thirty-six million, three hundred fifty-three thousand, six hundred forty-nine".