205618116864752 has 40 divisors (see below), whose sum is σ = 415130712411600. Its totient is φ = 98539364306432.

The previous prime is 205618116864749. The next prime is 205618116864817. The reversal of 205618116864752 is 257468611816502.

It is a happy number.

It is a congruent number.

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, 1617244802 + ... + 1617371937.

It is an arithmetic number, because the mean of its divisors is an integer number (10378267810290).

Almost surely, 2^{205618116864752} is an apocalyptic number.

It is an amenable number.

205618116864752 is an abundant number, since it is smaller than the sum of its proper divisors (209512595546848).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

205618116864752 is a wasteful number, since it uses less digits than its factorization.

205618116864752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3234616913 (or 3234616907 counting only the distinct ones).

The product of its (nonzero) digits is 38707200, while the sum is 62.

The spelling of 205618116864752 in words is "two hundred five trillion, six hundred eighteen billion, one hundred sixteen million, eight hundred sixty-four thousand, seven hundred fifty-two".