11117205205660 has 24 divisors (see below), whose sum is σ = 23350697180496. Its totient is φ = 4446012320640.

The previous prime is 11117205205651. The next prime is 11117205205693. The reversal of 11117205205660 is 6650250271111.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 54255286 + ... + 54459805.

It is an arithmetic number, because the mean of its divisors is an integer number (972945715854).

Almost surely, 2^{11117205205660} is an apocalyptic number.

11117205205660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11117205205660 is an abundant number, since it is smaller than the sum of its proper divisors (12233491974836).

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

11117205205660 is a wasteful number, since it uses less digits than its factorization.

11117205205660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108720213 (or 108720211 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 37.

Adding to 11117205205660 its reverse (6650250271111), we get a palindrome (17767455476771).

The spelling of 11117205205660 in words is "eleven trillion, one hundred seventeen billion, two hundred five million, two hundred five thousand, six hundred sixty".