66665014937 has 2 divisors, whose sum is σ = 66665014938. Its totient is φ = 66665014936.

The previous prime is 66665014921. The next prime is 66665014967. The reversal of 66665014937 is 73941056666.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 58649214976 + 8015799961 = 242176^2 + 89531^2 .

It is a cyclic number.

It is not a de Polignac number, because 66665014937 - 2⁴ = 66665014921 is a prime.

It is a super-2 number, since 2×66665014937² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (66665014967) 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, 33332507468 + 33332507469.

It is an arithmetic number, because the mean of its divisors is an integer number (33332507469).

Almost surely, 2^66665014937 is an apocalyptic number.

It is an amenable number.

66665014937 is a deficient number, since it is larger than the sum of its proper divisors (1).

66665014937 is an equidigital number, since it uses as much as digits as its factorization.

66665014937 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4898880, while the sum is 53.

The spelling of 66665014937 in words is "sixty-six billion, six hundred sixty-five million, fourteen thousand, nine hundred thirty-seven".