227916784861 has 2 divisors, whose sum is σ = 227916784862. Its totient is φ = 227916784860.

The previous prime is 227916784789. The next prime is 227916784897. The reversal of 227916784861 is 168487619722.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 203080916025 + 24835868836 = 450645^2 + 157594^2 .

It is a cyclic number.

It is not a de Polignac number, because 227916784861 - 2⁹ = 227916784349 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 227916784861.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (227916781861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 113958392430 + 113958392431.

It is an arithmetic number, because the mean of its divisors is an integer number (113958392431).

Almost surely, 2^227916784861 is an apocalyptic number.

It is an amenable number.

227916784861 is a deficient number, since it is larger than the sum of its proper divisors (1).

227916784861 is an equidigital number, since it uses as much as digits as its factorization.

227916784861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16257024, while the sum is 61.

The spelling of 227916784861 in words is "two hundred twenty-seven billion, nine hundred sixteen million, seven hundred eighty-four thousand, eight hundred sixty-one".