205423152044 has 24 divisors (see below), whose sum is σ = 393509965968. Its totient is φ = 93055471040.

The previous prime is 205423152023. The next prime is 205423152073. The reversal of 205423152044 is 440251324502.

It is a self number, because there is not a number n which added to its sum of digits gives 205423152044.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7954187 + ... + 7979970.

It is an arithmetic number, because the mean of its divisors is an integer number (16396248582).

Almost surely, 2^205423152044 is an apocalyptic number.

It is an amenable number.

205423152044 is a deficient number, since it is larger than the sum of its proper divisors (188086813924).

205423152044 is a wasteful number, since it uses less digits than its factorization.

205423152044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15934465 (or 15934463 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 32.

Adding to 205423152044 its reverse (440251324502), we get a palindrome (645674476546).

The spelling of 205423152044 in words is "two hundred five billion, four hundred twenty-three million, one hundred fifty-two thousand, forty-four".