204521345021027 has 2 divisors, whose sum is σ = 204521345021028. Its totient is φ = 204521345021026.

The previous prime is 204521345021017. The next prime is 204521345021069. The reversal of 204521345021027 is 720120543125402.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 204521345021027 - 2⁴ = 204521345021011 is a prime.

It is not a weakly prime, because it can be changed into another prime (204521345021017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102260672510513 + 102260672510514.

It is an arithmetic number, because the mean of its divisors is an integer number (102260672510514).

Almost surely, 2^{204521345021027} is an apocalyptic number.

204521345021027 is a deficient number, since it is larger than the sum of its proper divisors (1).

204521345021027 is an equidigital number, since it uses as much as digits as its factorization.

204521345021027 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 134400, while the sum is 38.

Adding to 204521345021027 its reverse (720120543125402), we get a palindrome (924641888146429).

The spelling of 204521345021027 in words is "two hundred four trillion, five hundred twenty-one billion, three hundred forty-five million, twenty-one thousand, twenty-seven".