11011261806 has 24 divisors (see below), whose sum is σ = 23898400344. Its totient is φ = 3664164240.

The previous prime is 11011261787. The next prime is 11011261817. The reversal of 11011261806 is 60816211011.

11011261806 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 11011261806.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 510505 + ... + 531636.

It is an arithmetic number, because the mean of its divisors is an integer number (995766681).

Almost surely, 2^11011261806 is an apocalyptic number.

11011261806 is an abundant number, since it is smaller than the sum of its proper divisors (12887138538).

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

11011261806 is a wasteful number, since it uses less digits than its factorization.

11011261806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1042736 (or 1042733 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 27.

Adding to 11011261806 its reverse (60816211011), we get a palindrome (71827472817).

The spelling of 11011261806 in words is "eleven billion, eleven million, two hundred sixty-one thousand, eight hundred six".