205501313312 has 24 divisors (see below), whose sum is σ = 404625942000. Its totient is φ = 102739169344.

The previous prime is 205501313233. The next prime is 205501313317. The reversal of 205501313312 is 213313105502.

It is not an unprimeable number, because it can be changed into a prime (205501313317) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64562 + ... + 644337.

It is an arithmetic number, because the mean of its divisors is an integer number (16859414250).

Almost surely, 2^205501313312 is an apocalyptic number.

It is an amenable number.

205501313312 is a deficient number, since it is larger than the sum of its proper divisors (199124628688).

205501313312 is an equidigital number, since it uses as much as digits as its factorization.

205501313312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 717968 (or 717960 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 26.

Adding to 205501313312 its reverse (213313105502), we get a palindrome (418814418814).

The spelling of 205501313312 in words is "two hundred five billion, five hundred one million, three hundred thirteen thousand, three hundred twelve".