204785322377 has 2 divisors, whose sum is σ = 204785322378. Its totient is φ = 204785322376.

The previous prime is 204785322337. The next prime is 204785322421. The reversal of 204785322377 is 773223587402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 189918153616 + 14867168761 = 435796^2 + 121931^2 .

It is a cyclic number.

It is not a de Polignac number, because 204785322377 - 2³² = 200490355081 is a prime.

It is a super-2 number, since 2×204785322377² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (204785322307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102392661188 + 102392661189.

It is an arithmetic number, because the mean of its divisors is an integer number (102392661189).

Almost surely, 2^204785322377 is an apocalyptic number.

It is an amenable number.

204785322377 is a deficient number, since it is larger than the sum of its proper divisors (1).

204785322377 is an equidigital number, since it uses as much as digits as its factorization.

204785322377 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3951360, while the sum is 50.

The spelling of 204785322377 in words is "two hundred four billion, seven hundred eighty-five million, three hundred twenty-two thousand, three hundred seventy-seven".