3666678337039 has 2 divisors, whose sum is σ = 3666678337040. Its totient is φ = 3666678337038.

The previous prime is 3666678337037. The next prime is 3666678337099. The reversal of 3666678337039 is 9307338766663.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3666678337039 - 2¹ = 3666678337037 is a prime.

It is a super-2 number, since 2×3666678337039² (a number of 26 digits) contains 22 as substring.

Together with 3666678337037, it forms a pair of twin primes.

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 polite number, since it can be written as a sum of consecutive naturals, namely, 1833339168519 + 1833339168520.

It is an arithmetic number, because the mean of its divisors is an integer number (1833339168520).

Almost surely, 2^{3666678337039} is an apocalyptic number.

3666678337039 is a deficient number, since it is larger than the sum of its proper divisors (1).

3666678337039 is an equidigital number, since it uses as much as digits as its factorization.

3666678337039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 370355328, while the sum is 67.

The spelling of 3666678337039 in words is "three trillion, six hundred sixty-six billion, six hundred seventy-eight million, three hundred thirty-seven thousand, thirty-nine".