542216565617 has 2 divisors, whose sum is σ = 542216565618. Its totient is φ = 542216565616.

The previous prime is 542216565599. The next prime is 542216565623. The reversal of 542216565617 is 716565612245.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 297721918321 + 244494647296 = 545639^2 + 494464^2 .

It is a cyclic number.

It is not a de Polignac number, because 542216565617 - 2¹⁴ = 542216549233 is a prime.

It is not a weakly prime, because it can be changed into another prime (542216565217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271108282808 + 271108282809.

It is an arithmetic number, because the mean of its divisors is an integer number (271108282809).

Almost surely, 2^542216565617 is an apocalyptic number.

It is an amenable number.

542216565617 is a deficient number, since it is larger than the sum of its proper divisors (1).

542216565617 is an equidigital number, since it uses as much as digits as its factorization.

542216565617 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3024000, while the sum is 50.

The spelling of 542216565617 in words is "five hundred forty-two billion, two hundred sixteen million, five hundred sixty-five thousand, six hundred seventeen".