205054315450 has 48 divisors (see below), whose sum is σ = 388737512064. Its totient is φ = 80455726400.

The previous prime is 205054315421. The next prime is 205054315481. The reversal of 205054315450 is 54513450502.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 552747 + ... + 845953.

It is an arithmetic number, because the mean of its divisors is an integer number (8098698168).

Almost surely, 2^205054315450 is an apocalyptic number.

205054315450 is a deficient number, since it is larger than the sum of its proper divisors (183683196614).

205054315450 is a wasteful number, since it uses less digits than its factorization.

205054315450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293487 (or 293482 counting only the distinct ones).

The product of its (nonzero) digits is 60000, while the sum is 34.

Adding to 205054315450 its reverse (54513450502), we get a palindrome (259567765952).

The spelling of 205054315450 in words is "two hundred five billion, fifty-four million, three hundred fifteen thousand, four hundred fifty".