144436259917 has 2 divisors, whose sum is σ = 144436259918. Its totient is φ = 144436259916.

The previous prime is 144436259909. The next prime is 144436259939. The reversal of 144436259917 is 719952634441.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 117470022121 + 26966237796 = 342739^2 + 164214^2 .

It is a cyclic number.

It is not a de Polignac number, because 144436259917 - 2³ = 144436259909 is a prime.

It is a super-2 number, since 2×144436259917² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (144436259017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72218129958 + 72218129959.

It is an arithmetic number, because the mean of its divisors is an integer number (72218129959).

Almost surely, 2^144436259917 is an apocalyptic number.

It is an amenable number.

144436259917 is a deficient number, since it is larger than the sum of its proper divisors (1).

144436259917 is an equidigital number, since it uses as much as digits as its factorization.

144436259917 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6531840, while the sum is 55.

The spelling of 144436259917 in words is "one hundred forty-four billion, four hundred thirty-six million, two hundred fifty-nine thousand, nine hundred seventeen".