205400244105 has 48 divisors (see below), whose sum is σ = 407723906304. Its totient is φ = 93704376960.

The previous prime is 205400244089. The next prime is 205400244121. The reversal of 205400244105 is 501442004502.

205400244105 is a `hidden beast` number, since 2 + 0 + 5 + 400 + 244 + 10 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (205400244089) and next prime (205400244121).

It is not a de Polignac number, because 205400244105 - 2⁴ = 205400244089 is a prime.

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, 516066 + ... + 822875.

It is an arithmetic number, because the mean of its divisors is an integer number (8494248048).

Almost surely, 2^205400244105 is an apocalyptic number.

It is an amenable number.

205400244105 is a deficient number, since it is larger than the sum of its proper divisors (202323662199).

205400244105 is a wasteful number, since it uses less digits than its factorization.

205400244105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1339446 (or 1339443 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

Adding to 205400244105 its reverse (501442004502), we get a palindrome (706842248607).

The spelling of 205400244105 in words is "two hundred five billion, four hundred million, two hundred forty-four thousand, one hundred five".