144688229281 has 2 divisors, whose sum is σ = 144688229282. Its totient is φ = 144688229280.

The previous prime is 144688229251. The next prime is 144688229293. The reversal of 144688229281 is 182922886441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 126013640256 + 18674589025 = 354984^2 + 136655^2 .

It is a cyclic number.

It is not a de Polignac number, because 144688229281 - 2²³ = 144679840673 is a prime.

It is a super-2 number, since 2×144688229281² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (144688229251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72344114640 + 72344114641.

It is an arithmetic number, because the mean of its divisors is an integer number (72344114641).

Almost surely, 2^144688229281 is an apocalyptic number.

It is an amenable number.

144688229281 is a deficient number, since it is larger than the sum of its proper divisors (1).

144688229281 is an equidigital number, since it uses as much as digits as its factorization.

144688229281 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3538944, while the sum is 55.

The spelling of 144688229281 in words is "one hundred forty-four billion, six hundred eighty-eight million, two hundred twenty-nine thousand, two hundred eighty-one".