204163653137 has 2 divisors, whose sum is σ = 204163653138. Its totient is φ = 204163653136.

The previous prime is 204163653121. The next prime is 204163653157. The reversal of 204163653137 is 731356361402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 197456698321 + 6706954816 = 444361^2 + 81896^2 .

It is a cyclic number.

It is not a de Polignac number, because 204163653137 - 2⁴ = 204163653121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 204163653094 and 204163653103.

It is not a weakly prime, because it can be changed into another prime (204163653157) 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, 102081826568 + 102081826569.

It is an arithmetic number, because the mean of its divisors is an integer number (102081826569).

Almost surely, 2^204163653137 is an apocalyptic number.

It is an amenable number.

204163653137 is a deficient number, since it is larger than the sum of its proper divisors (1).

204163653137 is an equidigital number, since it uses as much as digits as its factorization.

204163653137 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 272160, while the sum is 41.

The spelling of 204163653137 in words is "two hundred four billion, one hundred sixty-three million, six hundred fifty-three thousand, one hundred thirty-seven".