66051343123 has 2 divisors, whose sum is σ = 66051343124. Its totient is φ = 66051343122.

The previous prime is 66051343117. The next prime is 66051343153. The reversal of 66051343123 is 32134315066.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66051343123 - 2³³ = 57461408531 is a prime.

It is not a weakly prime, because it can be changed into another prime (66051343153) 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, 33025671561 + 33025671562.

It is an arithmetic number, because the mean of its divisors is an integer number (33025671562).

Almost surely, 2^66051343123 is an apocalyptic number.

66051343123 is a deficient number, since it is larger than the sum of its proper divisors (1).

66051343123 is an equidigital number, since it uses as much as digits as its factorization.

66051343123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 38880, while the sum is 34.

Adding to 66051343123 its reverse (32134315066), we get a palindrome (98185658189).

The spelling of 66051343123 in words is "sixty-six billion, fifty-one million, three hundred forty-three thousand, one hundred twenty-three".