1005544441243 has 2 divisors, whose sum is σ = 1005544441244. Its totient is φ = 1005544441242.

The previous prime is 1005544441207. The next prime is 1005544441277. The reversal of 1005544441243 is 3421444455001.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1005544441243 - 2¹⁷ = 1005544310171 is a prime.

It is a super-2 number, since 2×1005544441243² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1005544448243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 502772220621 + 502772220622.

It is an arithmetic number, because the mean of its divisors is an integer number (502772220622).

Almost surely, 2^{1005544441243} is an apocalyptic number.

1005544441243 is a deficient number, since it is larger than the sum of its proper divisors (1).

1005544441243 is an equidigital number, since it uses as much as digits as its factorization.

1005544441243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 153600, while the sum is 37.

Adding to 1005544441243 its reverse (3421444455001), we get a palindrome (4426988896244).

The spelling of 1005544441243 in words is "one trillion, five billion, five hundred forty-four million, four hundred forty-one thousand, two hundred forty-three".