205163934450 has 24 divisors (see below), whose sum is σ = 508806557808. Its totient is φ = 54710382480.

The previous prime is 205163934401. The next prime is 205163934457. The reversal of 205163934450 is 54439361502.

205163934450 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (205163934457) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 683879632 + ... + 683879931.

It is an arithmetic number, because the mean of its divisors is an integer number (21200273242).

Almost surely, 2^205163934450 is an apocalyptic number.

205163934450 is an abundant number, since it is smaller than the sum of its proper divisors (303642623358).

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

205163934450 is a wasteful number, since it uses less digits than its factorization.

205163934450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1367759578 (or 1367759573 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 42.

The spelling of 205163934450 in words is "two hundred five billion, one hundred sixty-three million, nine hundred thirty-four thousand, four hundred fifty".