3666426343117 has 2 divisors, whose sum is σ = 3666426343118. Its totient is φ = 3666426343116.

The previous prime is 3666426343109. The next prime is 3666426343121. The reversal of 3666426343117 is 7113436246663.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3193008036201 + 473418306916 = 1786899^2 + 688054^2 .

It is an emirp because it is prime and its reverse (7113436246663) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3666426343117 - 2³ = 3666426343109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3666426344117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1833213171558 + 1833213171559.

It is an arithmetic number, because the mean of its divisors is an integer number (1833213171559).

Almost surely, 2^{3666426343117} is an apocalyptic number.

It is an amenable number.

3666426343117 is a deficient number, since it is larger than the sum of its proper divisors (1).

3666426343117 is an equidigital number, since it uses as much as digits as its factorization.

3666426343117 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7838208, while the sum is 52.

The spelling of 3666426343117 in words is "three trillion, six hundred sixty-six billion, four hundred twenty-six million, three hundred forty-three thousand, one hundred seventeen".