204195188730 has 256 divisors, whose sum is σ = 572816240640. Its totient is φ = 46132150272.

The previous prime is 204195188723. The next prime is 204195188741. The reversal of 204195188730 is 37881591402.

It is a self number, because there is not a number n which added to its sum of digits gives 204195188730.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 60788791 + ... + 60792149.

It is an arithmetic number, because the mean of its divisors is an integer number (2237563440).

Almost surely, 2^204195188730 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 204195188730, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (286408120320).

204195188730 is an abundant number, since it is smaller than the sum of its proper divisors (368621051910).

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

204195188730 is a wasteful number, since it uses less digits than its factorization.

204195188730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3625.

The product of its (nonzero) digits is 483840, while the sum is 48.

The spelling of 204195188730 in words is "two hundred four billion, one hundred ninety-five million, one hundred eighty-eight thousand, seven hundred thirty".