144594861209 has 2 divisors, whose sum is σ = 144594861210. Its totient is φ = 144594861208.

The previous prime is 144594861167. The next prime is 144594861287. The reversal of 144594861209 is 902168495441.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 88684840000 + 55910021209 = 297800^2 + 236453^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-144594861209 is a prime.

It is not a weakly prime, because it can be changed into another prime (144594861809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72297430604 + 72297430605.

It is an arithmetic number, because the mean of its divisors is an integer number (72297430605).

Almost surely, 2^144594861209 is an apocalyptic number.

It is an amenable number.

144594861209 is a deficient number, since it is larger than the sum of its proper divisors (1).

144594861209 is an equidigital number, since it uses as much as digits as its factorization.

144594861209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2488320, while the sum is 53.

The spelling of 144594861209 in words is "one hundred forty-four billion, five hundred ninety-four million, eight hundred sixty-one thousand, two hundred nine".