204226138177 has 2 divisors, whose sum is σ = 204226138178. Its totient is φ = 204226138176.

The previous prime is 204226138031. The next prime is 204226138211. The reversal of 204226138177 is 771831622402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 177098730561 + 27127407616 = 420831^2 + 164704^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-204226138177 is a prime.

It is not a weakly prime, because it can be changed into another prime (204226148177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102113069088 + 102113069089.

It is an arithmetic number, because the mean of its divisors is an integer number (102113069089).

Almost surely, 2^204226138177 is an apocalyptic number.

It is an amenable number.

204226138177 is a deficient number, since it is larger than the sum of its proper divisors (1).

204226138177 is an equidigital number, since it uses as much as digits as its factorization.

204226138177 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 225792, while the sum is 43.

The spelling of 204226138177 in words is "two hundred four billion, two hundred twenty-six million, one hundred thirty-eight thousand, one hundred seventy-seven".