11056105610561 has 24 divisors (see below), whose sum is σ = 12384413274240. Its totient is φ = 9859340210720.

The previous prime is 11056105610531. The next prime is 11056105610569. The reversal of 11056105610561 is 16501650165011.

It is a happy number.

11056105610561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11056105610561 - 2³⁴ = 11038925741377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11056105610569) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31525070 + ... + 31873848.

It is an arithmetic number, because the mean of its divisors is an integer number (516017219760).

Almost surely, 2^{11056105610561} is an apocalyptic number.

11056105610561 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11056105610561 is a deficient number, since it is larger than the sum of its proper divisors (1328307663679).

11056105610561 is a wasteful number, since it uses less digits than its factorization.

11056105610561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 353797 (or 353786 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 38.

Adding to 11056105610561 its reverse (16501650165011), we get a palindrome (27557755775572).

The spelling of 11056105610561 in words is "eleven trillion, fifty-six billion, one hundred five million, six hundred ten thousand, five hundred sixty-one".