1143243110161 has 2 divisors, whose sum is σ = 1143243110162. Its totient is φ = 1143243110160.

The previous prime is 1143243110159. The next prime is 1143243110173. The reversal of 1143243110161 is 1610113423411.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1011169013761 + 132074096400 = 1005569^2 + 363420^2 .

It is a cyclic number.

It is not a de Polignac number, because 1143243110161 - 2¹ = 1143243110159 is a prime.

Together with 1143243110159, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1143243110561) 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, 571621555080 + 571621555081.

It is an arithmetic number, because the mean of its divisors is an integer number (571621555081).

Almost surely, 2^{1143243110161} is an apocalyptic number.

It is an amenable number.

1143243110161 is a deficient number, since it is larger than the sum of its proper divisors (1).

1143243110161 is an equidigital number, since it uses as much as digits as its factorization.

1143243110161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 28.

Adding to 1143243110161 its reverse (1610113423411), we get a palindrome (2753356533572).

The spelling of 1143243110161 in words is "one trillion, one hundred forty-three billion, two hundred forty-three million, one hundred ten thousand, one hundred sixty-one".