204528949550 has 24 divisors (see below), whose sum is σ = 392695586112. Its totient is φ = 79172496000.

The previous prime is 204528949549. The next prime is 204528949579. The reversal of 204528949550 is 55949825402.

It is a junction number, because it is equal to n+sod(n) for n = 204528949492 and 204528949501.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 65975531 + ... + 65978630.

It is an arithmetic number, because the mean of its divisors is an integer number (16362316088).

Almost surely, 2^204528949550 is an apocalyptic number.

204528949550 is a deficient number, since it is larger than the sum of its proper divisors (188166636562).

204528949550 is a wasteful number, since it uses less digits than its factorization.

204528949550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131954204 (or 131954199 counting only the distinct ones).

The product of its (nonzero) digits is 5184000, while the sum is 53.

The spelling of 204528949550 in words is "two hundred four billion, five hundred twenty-eight million, nine hundred forty-nine thousand, five hundred fifty".