205261003436 has 12 divisors (see below), whose sum is σ = 359225081040. Its totient is φ = 102625266000.

The previous prime is 205261003429. The next prime is 205261003447. The reversal of 205261003436 is 634300162502.

205261003436 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1220051 + ... + 1378058.

It is an arithmetic number, because the mean of its divisors is an integer number (29935423420).

Almost surely, 2^205261003436 is an apocalyptic number.

It is an amenable number.

205261003436 is a deficient number, since it is larger than the sum of its proper divisors (153964077604).

205261003436 is a wasteful number, since it uses less digits than its factorization.

205261003436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2617864 (or 2617862 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 32.

Adding to 205261003436 its reverse (634300162502), we get a palindrome (839561165938).

The spelling of 205261003436 in words is "two hundred five billion, two hundred sixty-one million, three thousand, four hundred thirty-six".