204791899841 has 2 divisors, whose sum is σ = 204791899842. Its totient is φ = 204791899840.

The previous prime is 204791899801. The next prime is 204791899849. The reversal of 204791899841 is 148998197402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 133126468225 + 71665431616 = 364865^2 + 267704^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-204791899841 is a prime.

It is not a weakly prime, because it can be changed into another prime (204791899849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102395949920 + 102395949921.

It is an arithmetic number, because the mean of its divisors is an integer number (102395949921).

Almost surely, 2^204791899841 is an apocalyptic number.

It is an amenable number.

204791899841 is a deficient number, since it is larger than the sum of its proper divisors (1).

204791899841 is an equidigital number, since it uses as much as digits as its factorization.

204791899841 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10450944, while the sum is 62.

The spelling of 204791899841 in words is "two hundred four billion, seven hundred ninety-one million, eight hundred ninety-nine thousand, eight hundred forty-one".