11056566673 has 4 divisors (see below), whose sum is σ = 11057634868. Its totient is φ = 11055498480.

The previous prime is 11056566667. The next prime is 11056566683. The reversal of 11056566673 is 37666565011.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 37666565011 = 919 ⋅40986469.

It can be written as a sum of positive squares in 2 ways, for example, as 6830526609 + 4226040064 = 82647^2 + 65008^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11056566673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11056566623) 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, 518418 + ... + 539323.

It is an arithmetic number, because the mean of its divisors is an integer number (2764408717).

Almost surely, 2^11056566673 is an apocalyptic number.

It is an amenable number.

11056566673 is a deficient number, since it is larger than the sum of its proper divisors (1068195).

11056566673 is a wasteful number, since it uses less digits than its factorization.

11056566673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1068194.

The product of its (nonzero) digits is 680400, while the sum is 46.

The spelling of 11056566673 in words is "eleven billion, fifty-six million, five hundred sixty-six thousand, six hundred seventy-three".