228661126661633 has 2 divisors, whose sum is σ = 228661126661634. Its totient is φ = 228661126661632.

The previous prime is 228661126661567. The next prime is 228661126661683. The reversal of 228661126661633 is 336166621166822.

It is a happy number.

228661126661633 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 139939270545649 + 88721856115984 = 11829593^2 + 9419228^2 .

It is a cyclic number.

It is not a de Polignac number, because 228661126661633 - 2¹⁰ = 228661126660609 is a prime.

It is not a weakly prime, because it can be changed into another prime (228661126661683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114330563330816 + 114330563330817.

It is an arithmetic number, because the mean of its divisors is an integer number (114330563330817).

Almost surely, 2^{228661126661633} is an apocalyptic number.

It is an amenable number.

228661126661633 is a deficient number, since it is larger than the sum of its proper divisors (1).

228661126661633 is an equidigital number, since it uses as much as digits as its factorization.

228661126661633 is an evil number, because the sum of its binary digits is even.

The product of its digits is 26873856, while the sum is 59.

The spelling of 228661126661633 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 thirty-three".