540204243217 has 2 divisors, whose sum is σ = 540204243218. Its totient is φ = 540204243216.

The previous prime is 540204243193. The next prime is 540204243259. The reversal of 540204243217 is 712342402045.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 505157033536 + 35047209681 = 710744^2 + 187209^2 .

It is a cyclic number.

It is not a de Polignac number, because 540204243217 - 2³⁵ = 505844504849 is a prime.

It is not a weakly prime, because it can be changed into another prime (540204243517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 270102121608 + 270102121609.

It is an arithmetic number, because the mean of its divisors is an integer number (270102121609).

Almost surely, 2^540204243217 is an apocalyptic number.

It is an amenable number.

540204243217 is a deficient number, since it is larger than the sum of its proper divisors (1).

540204243217 is an equidigital number, since it uses as much as digits as its factorization.

540204243217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 53760, while the sum is 34.

The spelling of 540204243217 in words is "five hundred forty billion, two hundred four million, two hundred forty-three thousand, two hundred seventeen".