1145843280761 has 2 divisors, whose sum is σ = 1145843280762. Its totient is φ = 1145843280760.

The previous prime is 1145843280739. The next prime is 1145843280943. The reversal of 1145843280761 is 1670823485411.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1046567874361 + 99275406400 = 1023019^2 + 315080^2 .

It is a cyclic number.

It is not a de Polignac number, because 1145843280761 - 2³⁰ = 1144769538937 is a prime.

It is not a weakly prime, because it can be changed into another prime (1145843280961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 572921640380 + 572921640381.

It is an arithmetic number, because the mean of its divisors is an integer number (572921640381).

Almost surely, 2^{1145843280761} is an apocalyptic number.

It is an amenable number.

1145843280761 is a deficient number, since it is larger than the sum of its proper divisors (1).

1145843280761 is an equidigital number, since it uses as much as digits as its factorization.

1145843280761 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1290240, while the sum is 50.

The spelling of 1145843280761 in words is "one trillion, one hundred forty-five billion, eight hundred forty-three million, two hundred eighty thousand, seven hundred sixty-one".