11101000660 has 12 divisors (see below), whose sum is σ = 23312101428. Its totient is φ = 4440400256.

The previous prime is 11101000649. The next prime is 11101000693. The reversal of 11101000660 is 6600010111.

It can be written as a sum of positive squares in 2 ways, for example, as 1453439376 + 9647561284 = 38124^2 + 98222^2 .

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 3 ways as a sum of consecutive naturals, for example, 277524997 + ... + 277525036.

It is an arithmetic number, because the mean of its divisors is an integer number (1942675119).

Almost surely, 2^11101000660 is an apocalyptic number.

11101000660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11101000660 is an abundant number, since it is smaller than the sum of its proper divisors (12211100768).

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

11101000660 is a wasteful number, since it uses less digits than its factorization.

11101000660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 555050042 (or 555050040 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 11101000660 its reverse (6600010111), we get a palindrome (17701010771).

The spelling of 11101000660 in words is "eleven billion, one hundred one million, six hundred sixty", and thus it is an aban number.