3666678337037 has 2 divisors, whose sum is σ = 3666678337038. Its totient is φ = 3666678337036.

The previous prime is 3666678337033. The next prime is 3666678337039. The reversal of 3666678337037 is 7307338766663.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3602939255881 + 63739081156 = 1898141^2 + 252466^2 .

It is a cyclic number.

It is not a de Polignac number, because 3666678337037 - 2² = 3666678337033 is a prime.

It is a super-3 number, since 3×3666678337037³ (a number of 39 digits) contains 333 as substring.

Together with 3666678337039, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3666678337033) 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, 1833339168518 + 1833339168519.

It is an arithmetic number, because the mean of its divisors is an integer number (1833339168519).

Almost surely, 2^{3666678337037} is an apocalyptic number.

It is an amenable number.

3666678337037 is a deficient number, since it is larger than the sum of its proper divisors (1).

3666678337037 is an equidigital number, since it uses as much as digits as its factorization.

3666678337037 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288054144, while the sum is 65.

The spelling of 3666678337037 in words is "three trillion, six hundred sixty-six billion, six hundred seventy-eight million, three hundred thirty-seven thousand, thirty-seven".