43435265449 has 2 divisors, whose sum is σ = 43435265450. Its totient is φ = 43435265448.

The previous prime is 43435265411. The next prime is 43435265453. The reversal of 43435265449 is 94456253434.

43435265449 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39256289424 + 4178976025 = 198132^2 + 64645^2 .

It is a cyclic number.

It is not a de Polignac number, because 43435265449 - 2²¹ = 43433168297 is a prime.

It is not a weakly prime, because it can be changed into another prime (43435265459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21717632724 + 21717632725.

It is an arithmetic number, because the mean of its divisors is an integer number (21717632725).

Almost surely, 2^43435265449 is an apocalyptic number.

It is an amenable number.

43435265449 is a deficient number, since it is larger than the sum of its proper divisors (1).

43435265449 is an equidigital number, since it uses as much as digits as its factorization.

43435265449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6220800, while the sum is 49.

The spelling of 43435265449 in words is "forty-three billion, four hundred thirty-five million, two hundred sixty-five thousand, four hundred forty-nine".