11056567771 has 4 divisors (see below), whose sum is σ = 11061758344. Its totient is φ = 11051377200.

The previous prime is 11056567759. The next prime is 11056567789. The reversal of 11056567771 is 17776565011.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11056567771 - 2³¹ = 8909084123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11056567721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2592090 + ... + 2596351.

It is an arithmetic number, because the mean of its divisors is an integer number (2765439586).

Almost surely, 2^11056567771 is an apocalyptic number.

11056567771 is a deficient number, since it is larger than the sum of its proper divisors (5190573).

11056567771 is an equidigital number, since it uses as much as digits as its factorization.

11056567771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5190572.

The product of its (nonzero) digits is 308700, while the sum is 46.

The spelling of 11056567771 in words is "eleven billion, fifty-six million, five hundred sixty-seven thousand, seven hundred seventy-one".