66016065056671 has 2 divisors, whose sum is σ = 66016065056672. Its totient is φ = 66016065056670.

The previous prime is 66016065056593. The next prime is 66016065056723. The reversal of 66016065056671 is 17665056061066.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66016065056671 - 2¹⁷ = 66016064925599 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66016065057671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33008032528335 + 33008032528336.

It is an arithmetic number, because the mean of its divisors is an integer number (33008032528336).

Almost surely, 2^{66016065056671} is an apocalyptic number.

66016065056671 is a deficient number, since it is larger than the sum of its proper divisors (1).

66016065056671 is an equidigital number, since it uses as much as digits as its factorization.

66016065056671 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8164800, while the sum is 55.

The spelling of 66016065056671 in words is "sixty-six trillion, sixteen billion, sixty-five million, fifty-six thousand, six hundred seventy-one".