2186656649227 has 2 divisors, whose sum is σ = 2186656649228. Its totient is φ = 2186656649226.

The previous prime is 2186656649207. The next prime is 2186656649237. The reversal of 2186656649227 is 7229466566812.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2186656649227 is a prime.

It is not a weakly prime, because it can be changed into another prime (2186656649207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1093328324613 + 1093328324614.

It is an arithmetic number, because the mean of its divisors is an integer number (1093328324614).

Almost surely, 2^{2186656649227} is an apocalyptic number.

2186656649227 is a deficient number, since it is larger than the sum of its proper divisors (1).

2186656649227 is an equidigital number, since it uses as much as digits as its factorization.

2186656649227 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 104509440, while the sum is 64.

The spelling of 2186656649227 in words is "two trillion, one hundred eighty-six billion, six hundred fifty-six million, six hundred forty-nine thousand, two hundred twenty-seven".