66106005127 has 2 divisors, whose sum is σ = 66106005128. Its totient is φ = 66106005126.

The previous prime is 66106005107. The next prime is 66106005181. The reversal of 66106005127 is 72150060166.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66106005127 - 2¹⁹ = 66105480839 is a prime.

It is a super-2 number, since 2×66106005127² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 66106005092 and 66106005101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66106005107) 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, 33053002563 + 33053002564.

It is an arithmetic number, because the mean of its divisors is an integer number (33053002564).

Almost surely, 2^66106005127 is an apocalyptic number.

66106005127 is a deficient number, since it is larger than the sum of its proper divisors (1).

66106005127 is an equidigital number, since it uses as much as digits as its factorization.

66106005127 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15120, while the sum is 34.

The spelling of 66106005127 in words is "sixty-six billion, one hundred six million, five thousand, one hundred twenty-seven".