1244432421481 has 2 divisors, whose sum is σ = 1244432421482. Its totient is φ = 1244432421480.

The previous prime is 1244432421433. The next prime is 1244432421559. The reversal of 1244432421481 is 1841242344421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1244375946256 + 56475225 = 1115516^2 + 7515^2 .

It is an emirp because it is prime and its reverse (1841242344421) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1244432421481 is a prime.

It is a super-2 number, since 2×1244432421481² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1244432421581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 622216210740 + 622216210741.

It is an arithmetic number, because the mean of its divisors is an integer number (622216210741).

Almost surely, 2^{1244432421481} is an apocalyptic number.

It is an amenable number.

1244432421481 is a deficient number, since it is larger than the sum of its proper divisors (1).

1244432421481 is an equidigital number, since it uses as much as digits as its factorization.

1244432421481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 196608, while the sum is 40.

The spelling of 1244432421481 in words is "one trillion, two hundred forty-four billion, four hundred thirty-two million, four hundred twenty-one thousand, four hundred eighty-one".