66516848029 has 2 divisors, whose sum is σ = 66516848030. Its totient is φ = 66516848028.

The previous prime is 66516848011. The next prime is 66516848081. The reversal of 66516848029 is 92084861566.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63056232100 + 3460615929 = 251110^2 + 58827^2 .

It is a cyclic number.

It is not a de Polignac number, because 66516848029 - 2⁹ = 66516847517 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66516848129) 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, 33258424014 + 33258424015.

It is an arithmetic number, because the mean of its divisors is an integer number (33258424015).

Almost surely, 2^66516848029 is an apocalyptic number.

It is an amenable number.

66516848029 is a deficient number, since it is larger than the sum of its proper divisors (1).

66516848029 is an equidigital number, since it uses as much as digits as its factorization.

66516848029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4976640, while the sum is 55.

The spelling of 66516848029 in words is "sixty-six billion, five hundred sixteen million, eight hundred forty-eight thousand, twenty-nine".