204690652816 has 20 divisors (see below), whose sum is σ = 427094920252. Its totient is φ = 94472608896.

The previous prime is 204690652813. The next prime is 204690652819. The reversal of 204690652816 is 618256096402.

204690652816 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (204690652813) and next prime (204690652819).

It can be written as a sum of positive squares in 2 ways, for example, as 46044576400 + 158646076416 = 214580^2 + 398304^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 204690652816.

It is not an unprimeable number, because it can be changed into a prime (204690652813) 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 3 ways as a sum of consecutive naturals, for example, 492044631 + ... + 492045046.

Almost surely, 2^204690652816 is an apocalyptic number.

204690652816 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

204690652816 is an abundant number, since it is smaller than the sum of its proper divisors (222404267436).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

204690652816 is a wasteful number, since it uses less digits than its factorization.

204690652816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 984089698 (or 984089692 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 49.

The spelling of 204690652816 in words is "two hundred four billion, six hundred ninety million, six hundred fifty-two thousand, eight hundred sixteen".