204577099204 has 81 divisors (see below), whose sum is σ = 389169585511. Its totient is φ = 94078816000.

The previous prime is 204577099159. The next prime is 204577099211. The reversal of 204577099204 is 402990775402.

The square root of 204577099204 is 452302.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 51257865604 + 153319233600 = 226402^2 + 391560^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 815048079 + ... + 815048329.

Almost surely, 2^204577099204 is an apocalyptic number.

204577099204 is the 452302-nd square number.

It is an amenable number.

204577099204 is a deficient number, since it is larger than the sum of its proper divisors (184592486307).

204577099204 is an equidigital number, since it uses as much as digits as its factorization.

204577099204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 646 (or 323 counting only the distinct ones).

The product of its (nonzero) digits is 1270080, while the sum is 49.

Multiplying 204577099204 by its sum of digits (49), we get a square (10024277860996 = 3166114²).

The spelling of 204577099204 in words is "two hundred four billion, five hundred seventy-seven million, ninety-nine thousand, two hundred four".