204660666600 has 192 divisors, whose sum is σ = 692876903040. Its totient is φ = 49668326400.

The previous prime is 204660666593. The next prime is 204660666611. The reversal of 204660666600 is 6666066402.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 369022 + ... + 738578.

It is an arithmetic number, because the mean of its divisors is an integer number (3608733870).

Almost surely, 2^204660666600 is an apocalyptic number.

204660666600 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 204660666600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (346438451520).

204660666600 is an abundant number, since it is smaller than the sum of its proper divisors (488216236440).

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

204660666600 is a wasteful number, since it uses less digits than its factorization.

204660666600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 369660 (or 369651 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 42.

The spelling of 204660666600 in words is "two hundred four billion, six hundred sixty million, six hundred sixty-six thousand, six hundred".