204705513101 has 2 divisors, whose sum is σ = 204705513102. Its totient is φ = 204705513100.

The previous prime is 204705513079. The next prime is 204705513139. The reversal of 204705513101 is 101315507402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 112258502500 + 92447010601 = 335050^2 + 304051^2 .

It is a cyclic number.

It is not a de Polignac number, because 204705513101 - 2⁶ = 204705513037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204705513191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102352756550 + 102352756551.

It is an arithmetic number, because the mean of its divisors is an integer number (102352756551).

Almost surely, 2^204705513101 is an apocalyptic number.

It is an amenable number.

204705513101 is a deficient number, since it is larger than the sum of its proper divisors (1).

204705513101 is an equidigital number, since it uses as much as digits as its factorization.

204705513101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4200, while the sum is 29.

The spelling of 204705513101 in words is "two hundred four billion, seven hundred five million, five hundred thirteen thousand, one hundred one".