660505055039 has 2 divisors, whose sum is σ = 660505055040. Its totient is φ = 660505055038.

The previous prime is 660505054969. The next prime is 660505055081. The reversal of 660505055039 is 930550505066.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 660505055039 - 2¹² = 660505050943 is a prime.

It is a super-3 number, since 3×660505055039³ (a number of 36 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (660505055099) 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, 330252527519 + 330252527520.

It is an arithmetic number, because the mean of its divisors is an integer number (330252527520).

Almost surely, 2^660505055039 is an apocalyptic number.

660505055039 is a deficient number, since it is larger than the sum of its proper divisors (1).

660505055039 is an equidigital number, since it uses as much as digits as its factorization.

660505055039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 607500, while the sum is 44.

The spelling of 660505055039 in words is "six hundred sixty billion, five hundred five million, fifty-five thousand, thirty-nine".