204505686530 has 32 divisors (see below), whose sum is σ = 380231912448. Its totient is φ = 79112001600.

The previous prime is 204505686487. The next prime is 204505686533. The reversal of 204505686530 is 35686505402.

204505686530 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (204505686533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 264560 + ... + 692100.

It is an arithmetic number, because the mean of its divisors is an integer number (11882247264).

Almost surely, 2^204505686530 is an apocalyptic number.

204505686530 is a deficient number, since it is larger than the sum of its proper divisors (175726225918).

204505686530 is a wasteful number, since it uses less digits than its factorization.

204505686530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429122.

The product of its (nonzero) digits is 864000, while the sum is 44.

The spelling of 204505686530 in words is "two hundred four billion, five hundred five million, six hundred eighty-six thousand, five hundred thirty".