542242564651 has 2 divisors, whose sum is σ = 542242564652. Its totient is φ = 542242564650.

The previous prime is 542242564609. The next prime is 542242564697. The reversal of 542242564651 is 156465242245.

It is a happy number.

It is an a-pointer prime, because the next prime (542242564697) can be obtained adding 542242564651 to its sum of digits (46).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 542242564651 - 2⁹ = 542242564139 is a prime.

It is not a weakly prime, because it can be changed into another prime (542242534651) 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, 271121282325 + 271121282326.

It is an arithmetic number, because the mean of its divisors is an integer number (271121282326).

Almost surely, 2^542242564651 is an apocalyptic number.

542242564651 is a deficient number, since it is larger than the sum of its proper divisors (1).

542242564651 is an equidigital number, since it uses as much as digits as its factorization.

542242564651 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2304000, while the sum is 46.

The spelling of 542242564651 in words is "five hundred forty-two billion, two hundred forty-two million, five hundred sixty-four thousand, six hundred fifty-one".