66016255620067 has 2 divisors, whose sum is σ = 66016255620068. Its totient is φ = 66016255620066.

The previous prime is 66016255620053. The next prime is 66016255620097. The reversal of 66016255620067 is 76002655261066.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66016255620067 - 2⁷ = 66016255619939 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 66016255619996 and 66016255620023.

It is not a weakly prime, because it can be changed into another prime (66016255620047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33008127810033 + 33008127810034.

It is an arithmetic number, because the mean of its divisors is an integer number (33008127810034).

Almost surely, 2^{66016255620067} is an apocalyptic number.

66016255620067 is a deficient number, since it is larger than the sum of its proper divisors (1).

66016255620067 is an equidigital number, since it uses as much as digits as its factorization.

66016255620067 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5443200, while the sum is 52.

The spelling of 66016255620067 in words is "sixty-six trillion, sixteen billion, two hundred fifty-five million, six hundred twenty thousand, sixty-seven".