144332531971861 has 2 divisors, whose sum is σ = 144332531971862. Its totient is φ = 144332531971860.

The previous prime is 144332531971811. The next prime is 144332531971867. The reversal of 144332531971861 is 168179135233441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 143212679122500 + 1119852849361 = 11967150^2 + 1058231^2 .

It is a cyclic number.

It is not a de Polignac number, because 144332531971861 - 2³³ = 144323942037269 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 144332531971796 and 144332531971805.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (144332531971867) 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, 72166265985930 + 72166265985931.

It is an arithmetic number, because the mean of its divisors is an integer number (72166265985931).

Almost surely, 2^{144332531971861} is an apocalyptic number.

It is an amenable number.

144332531971861 is a deficient number, since it is larger than the sum of its proper divisors (1).

144332531971861 is an equidigital number, since it uses as much as digits as its factorization.

144332531971861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13063680, while the sum is 58.

The spelling of 144332531971861 in words is "one hundred forty-four trillion, three hundred thirty-two billion, five hundred thirty-one million, nine hundred seventy-one thousand, eight hundred sixty-one".