45043554856849 has 2 divisors, whose sum is σ = 45043554856850. Its totient is φ = 45043554856848.

The previous prime is 45043554856799. The next prime is 45043554856889. The reversal of 45043554856849 is 94865845534054.

45043554856849 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., 44974526753025 + 69028103824 = 6706305^2 + 262732^2 .

It is a cyclic number.

It is not a de Polignac number, because 45043554856849 - 2⁷ = 45043554856721 is a prime.

It is not a weakly prime, because it can be changed into another prime (45043554856889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22521777428424 + 22521777428425.

It is an arithmetic number, because the mean of its divisors is an integer number (22521777428425).

Almost surely, 2^{45043554856849} is an apocalyptic number.

It is an amenable number.

45043554856849 is a deficient number, since it is larger than the sum of its proper divisors (1).

45043554856849 is an equidigital number, since it uses as much as digits as its factorization.

45043554856849 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1658880000, while the sum is 70.

The spelling of 45043554856849 in words is "forty-five trillion, forty-three billion, five hundred fifty-four million, eight hundred fifty-six thousand, eight hundred forty-nine".