11109643775 has 6 divisors (see below), whose sum is σ = 13775958312. Its totient is φ = 8887715000.

The previous prime is 11109643751. The next prime is 11109643777. The reversal of 11109643775 is 57734690111.

It is not a de Polignac number, because 11109643775 - 2¹⁴ = 11109627391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11109643777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 222192851 + ... + 222192900.

It is an arithmetic number, because the mean of its divisors is an integer number (2295993052).

Almost surely, 2^11109643775 is an apocalyptic number.

11109643775 is a deficient number, since it is larger than the sum of its proper divisors (2666314537).

11109643775 is an equidigital number, since it uses as much as digits as its factorization.

11109643775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444385761 (or 444385756 counting only the distinct ones).

The product of its (nonzero) digits is 158760, while the sum is 44.

The spelling of 11109643775 in words is "eleven billion, one hundred nine million, six hundred forty-three thousand, seven hundred seventy-five".