145552544209 has 2 divisors, whose sum is σ = 145552544210. Its totient is φ = 145552544208.

The previous prime is 145552544177. The next prime is 145552544219. The reversal of 145552544209 is 902445255541.

145552544209 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., 113474659600 + 32077884609 = 336860^2 + 179103^2 .

It is a cyclic number.

It is not a de Polignac number, because 145552544209 - 2⁵ = 145552544177 is a prime.

It is not a weakly prime, because it can be changed into another prime (145552544219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72776272104 + 72776272105.

It is an arithmetic number, because the mean of its divisors is an integer number (72776272105).

Almost surely, 2^145552544209 is an apocalyptic number.

It is an amenable number.

145552544209 is a deficient number, since it is larger than the sum of its proper divisors (1).

145552544209 is an equidigital number, since it uses as much as digits as its factorization.

145552544209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440000, while the sum is 46.

The spelling of 145552544209 in words is "one hundred forty-five billion, five hundred fifty-two million, five hundred forty-four thousand, two hundred nine".