540664031617 has 2 divisors, whose sum is σ = 540664031618. Its totient is φ = 540664031616.

The previous prime is 540664031599. The next prime is 540664031693. The reversal of 540664031617 is 716130466045.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 537341777296 + 3322254321 = 733036^2 + 57639^2 .

It is a cyclic number.

It is not a de Polignac number, because 540664031617 - 2³¹ = 538516547969 is a prime.

It is not a weakly prime, because it can be changed into another prime (540667031617) 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, 270332015808 + 270332015809.

It is an arithmetic number, because the mean of its divisors is an integer number (270332015809).

Almost surely, 2^540664031617 is an apocalyptic number.

It is an amenable number.

540664031617 is a deficient number, since it is larger than the sum of its proper divisors (1).

540664031617 is an equidigital number, since it uses as much as digits as its factorization.

540664031617 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 362880, while the sum is 43.

The spelling of 540664031617 in words is "five hundred forty billion, six hundred sixty-four million, thirty-one thousand, six hundred seventeen".