228661126661648 has 10 divisors (see below), whose sum is σ = 443030932906974. Its totient is φ = 114330563330816.

The previous prime is 228661126661633. The next prime is 228661126661683. The reversal of 228661126661648 is 846166621166822.

228661126661648 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 139433303843344 + 89227822818304 = 11808188^2 + 9446048^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7145660208161 + ... + 7145660208192.

Almost surely, 2^{228661126661648} is an apocalyptic number.

It is an amenable number.

228661126661648 is a deficient number, since it is larger than the sum of its proper divisors (214369806245326).

228661126661648 is a wasteful number, since it uses less digits than its factorization.

228661126661648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14291320416361 (or 14291320416355 counting only the distinct ones).

The product of its digits is 95551488, while the sum is 65.

The spelling of 228661126661648 in words is "two hundred twenty-eight trillion, six hundred sixty-one billion, one hundred twenty-six million, six hundred sixty-one thousand, six hundred forty-eight".