227163677861 has 2 divisors, whose sum is σ = 227163677862. Its totient is φ = 227163677860.

The previous prime is 227163677843. The next prime is 227163677863. The reversal of 227163677861 is 168776361722.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 223946632900 + 3217044961 = 473230^2 + 56719^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-227163677861 is a prime.

It is a Sophie Germain prime.

Together with 227163677863, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 227163677797 and 227163677806.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (227163677863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 113581838930 + 113581838931.

It is an arithmetic number, because the mean of its divisors is an integer number (113581838931).

Almost surely, 2^227163677861 is an apocalyptic number.

It is an amenable number.

227163677861 is a deficient number, since it is larger than the sum of its proper divisors (1).

227163677861 is an equidigital number, since it uses as much as digits as its factorization.

227163677861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7112448, while the sum is 56.

The spelling of 227163677861 in words is "two hundred twenty-seven billion, one hundred sixty-three million, six hundred seventy-seven thousand, eight hundred sixty-one".