204050989845 has 48 divisors (see below), whose sum is σ = 365483169792. Its totient is φ = 105205443840.

The previous prime is 204050989843. The next prime is 204050989871. The reversal of 204050989845 is 548989050402.

It is a happy number.

204050989845 is a `hidden beast` number, since 2 + 0 + 4 + 0 + 509 + 8 + 98 + 45 = 666.

It is not a de Polignac number, because 204050989845 - 2¹ = 204050989843 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 204050989791 and 204050989800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204050989843) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1252692 + ... + 1406178.

It is an arithmetic number, because the mean of its divisors is an integer number (7614232704).

Almost surely, 2^204050989845 is an apocalyptic number.

It is an amenable number.

204050989845 is a deficient number, since it is larger than the sum of its proper divisors (161432179947).

204050989845 is a wasteful number, since it uses less digits than its factorization.

204050989845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154482 (or 154479 counting only the distinct ones).

The product of its (nonzero) digits is 4147200, while the sum is 54.

The spelling of 204050989845 in words is "two hundred four billion, fifty million, nine hundred eighty-nine thousand, eight hundred forty-five".