12144455209 has 2 divisors, whose sum is σ = 12144455210. Its totient is φ = 12144455208.

The previous prime is 12144455201. The next prime is 12144455243. The reversal of 12144455209 is 90255444121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8612768025 + 3531687184 = 92805^2 + 59428^2 .

It is a cyclic number.

It is not a de Polignac number, because 12144455209 - 2³ = 12144455201 is a prime.

It is not a weakly prime, because it can be changed into another prime (12144455201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6072227604 + 6072227605.

It is an arithmetic number, because the mean of its divisors is an integer number (6072227605).

Almost surely, 2^12144455209 is an apocalyptic number.

It is an amenable number.

12144455209 is a deficient number, since it is larger than the sum of its proper divisors (1).

12144455209 is an equidigital number, since it uses as much as digits as its factorization.

12144455209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 57600, while the sum is 37.

The spelling of 12144455209 in words is "twelve billion, one hundred forty-four million, four hundred fifty-five thousand, two hundred nine".