204505201157 has 2 divisors, whose sum is σ = 204505201158. Its totient is φ = 204505201156.

The previous prime is 204505201151. The next prime is 204505201267. The reversal of 204505201157 is 751102505402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 199928813956 + 4576387201 = 447134^2 + 67649^2 .

It is a cyclic number.

It is not a de Polignac number, because 204505201157 - 2¹⁴ = 204505184773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204505201151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102252600578 + 102252600579.

It is an arithmetic number, because the mean of its divisors is an integer number (102252600579).

Almost surely, 2^204505201157 is an apocalyptic number.

It is an amenable number.

204505201157 is a deficient number, since it is larger than the sum of its proper divisors (1).

204505201157 is an equidigital number, since it uses as much as digits as its factorization.

204505201157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14000, while the sum is 32.

Adding to 204505201157 its reverse (751102505402), we get a palindrome (955607706559).

The spelling of 204505201157 in words is "two hundred four billion, five hundred five million, two hundred one thousand, one hundred fifty-seven".