205686113260 has 24 divisors (see below), whose sum is σ = 431993159136. Its totient is φ = 82264479360.

The previous prime is 205686113251. The next prime is 205686113287. The reversal of 205686113260 is 62311686502.

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, 452497 + ... + 784936.

It is an arithmetic number, because the mean of its divisors is an integer number (17999714964).

Almost surely, 2^205686113260 is an apocalyptic number.

205686113260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

205686113260 is an abundant number, since it is smaller than the sum of its proper divisors (226307045876).

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

205686113260 is a wasteful number, since it uses less digits than its factorization.

205686113260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1245753 (or 1245751 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 40.

Adding to 205686113260 its reverse (62311686502), we get a palindrome (267997799762).

The spelling of 205686113260 in words is "two hundred five billion, six hundred eighty-six million, one hundred thirteen thousand, two hundred sixty".