542216565623 has 2 divisors, whose sum is σ = 542216565624. Its totient is φ = 542216565622.

The previous prime is 542216565617. The next prime is 542216565661. The reversal of 542216565623 is 326565612245.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 542216565623 - 2⁶ = 542216565559 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (542216565523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271108282811 + 271108282812.

It is an arithmetic number, because the mean of its divisors is an integer number (271108282812).

Almost surely, 2^542216565623 is an apocalyptic number.

542216565623 is a deficient number, since it is larger than the sum of its proper divisors (1).

542216565623 is an equidigital number, since it uses as much as digits as its factorization.

542216565623 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2592000, while the sum is 47.

The spelling of 542216565623 in words is "five hundred forty-two billion, two hundred sixteen million, five hundred sixty-five thousand, six hundred twenty-three".