204505200947 has 2 divisors, whose sum is σ = 204505200948. Its totient is φ = 204505200946.

The previous prime is 204505200943. The next prime is 204505200959. The reversal of 204505200947 is 749002505402.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 204505200947 - 2² = 204505200943 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 204505200947.

It is not a weakly prime, because it can be changed into another prime (204505200943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102252600473 + 102252600474.

It is an arithmetic number, because the mean of its divisors is an integer number (102252600474).

Almost surely, 2^204505200947 is an apocalyptic number.

204505200947 is a deficient number, since it is larger than the sum of its proper divisors (1).

204505200947 is an equidigital number, since it uses as much as digits as its factorization.

204505200947 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 100800, while the sum is 38.

The spelling of 204505200947 in words is "two hundred four billion, five hundred five million, two hundred thousand, nine hundred forty-seven".