3666686835379 has 2 divisors, whose sum is σ = 3666686835380. Its totient is φ = 3666686835378.

The previous prime is 3666686835337. The next prime is 3666686835439. The reversal of 3666686835379 is 9735386866663.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3666686835379 - 2¹³ = 3666686827187 is a prime.

It is not a weakly prime, because it can be changed into another prime (3666656835379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1833343417689 + 1833343417690.

It is an arithmetic number, because the mean of its divisors is an integer number (1833343417690).

Almost surely, 2^{3666686835379} is an apocalyptic number.

3666686835379 is a deficient number, since it is larger than the sum of its proper divisors (1).

3666686835379 is an equidigital number, since it uses as much as digits as its factorization.

3666686835379 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4232632320, while the sum is 76.

The spelling of 3666686835379 in words is "three trillion, six hundred sixty-six billion, six hundred eighty-six million, eight hundred thirty-five thousand, three hundred seventy-nine".