205144103254 has 12 divisors (see below), whose sum is σ = 324764142444. Its totient is φ = 97173522252.

The previous prime is 205144103249. The next prime is 205144103267. The reversal of 205144103254 is 452301441502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 142065832 + ... + 142067275.

It is an arithmetic number, because the mean of its divisors is an integer number (27063678537).

Almost surely, 2^205144103254 is an apocalyptic number.

205144103254 is a deficient number, since it is larger than the sum of its proper divisors (119620039190).

205144103254 is a wasteful number, since it uses less digits than its factorization.

205144103254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284133147 (or 284133128 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 31.

Adding to 205144103254 its reverse (452301441502), we get a palindrome (657445544756).

The spelling of 205144103254 in words is "two hundred five billion, one hundred forty-four million, one hundred three thousand, two hundred fifty-four".