3681447667211 has 2 divisors, whose sum is σ = 3681447667212. Its totient is φ = 3681447667210.

The previous prime is 3681447667069. The next prime is 3681447667213. The reversal of 3681447667211 is 1127667441863.

It is a strong prime.

It is an emirp because it is prime and its reverse (1127667441863) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3681447667211 - 2¹⁴ = 3681447650827 is a prime.

Together with 3681447667213, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (3681447667213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1840723833605 + 1840723833606.

It is an arithmetic number, because the mean of its divisors is an integer number (1840723833606).

Almost surely, 2^{3681447667211} is an apocalyptic number.

3681447667211 is a deficient number, since it is larger than the sum of its proper divisors (1).

3681447667211 is an equidigital number, since it uses as much as digits as its factorization.

3681447667211 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8128512, while the sum is 56.

The spelling of 3681447667211 in words is "three trillion, six hundred eighty-one billion, four hundred forty-seven million, six hundred sixty-seven thousand, two hundred eleven".