204430561445550 has 96 divisors (see below), whose sum is σ = 553086051727104. Its totient is φ = 49558165920000.

The previous prime is 204430561445491. The next prime is 204430561445587. The reversal of 204430561445550 is 55544165034402.

204430561445550 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×204430561445550² (a number of 29 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 204430561445550.

It is a congruent 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, 110957967 + ... + 112785333.

It is an arithmetic number, because the mean of its divisors is an integer number (5761313038824).

Almost surely, 2^{204430561445550} is an apocalyptic number.

204430561445550 is an abundant number, since it is smaller than the sum of its proper divisors (348655490281554).

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

204430561445550 is a wasteful number, since it uses less digits than its factorization.

204430561445550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1895194 (or 1895189 counting only the distinct ones).

The product of its (nonzero) digits is 5760000, while the sum is 48.

The spelling of 204430561445550 in words is "two hundred four trillion, four hundred thirty billion, five hundred sixty-one million, four hundred forty-five thousand, five hundred fifty".