66042212563 has 2 divisors, whose sum is σ = 66042212564. Its totient is φ = 66042212562.

The previous prime is 66042212549. The next prime is 66042212591. The reversal of 66042212563 is 36521224066.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66042212563 is a prime.

It is not a weakly prime, because it can be changed into another prime (66042212263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33021106281 + 33021106282.

It is an arithmetic number, because the mean of its divisors is an integer number (33021106282).

Almost surely, 2^66042212563 is an apocalyptic number.

66042212563 is a deficient number, since it is larger than the sum of its proper divisors (1).

66042212563 is an equidigital number, since it uses as much as digits as its factorization.

66042212563 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 103680, while the sum is 37.

The spelling of 66042212563 in words is "sixty-six billion, forty-two million, two hundred twelve thousand, five hundred sixty-three".