11005320571 has 24 divisors (see below), whose sum is σ = 13228020096. Its totient is φ = 9119900160.

The previous prime is 11005320539. The next prime is 11005320593. The reversal of 11005320571 is 17502350011.

It is not a de Polignac number, because 11005320571 - 2⁵ = 11005320539 is a prime.

It is a super-2 number, since 2×11005320571² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11005320511) 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, 1876075 + ... + 1881931.

It is an arithmetic number, because the mean of its divisors is an integer number (551167504).

Almost surely, 2^11005320571 is an apocalyptic number.

11005320571 is a deficient number, since it is larger than the sum of its proper divisors (2222699525).

11005320571 is a wasteful number, since it uses less digits than its factorization.

11005320571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7139 (or 7132 counting only the distinct ones).

The product of its (nonzero) digits is 1050, while the sum is 25.

Adding to 11005320571 its reverse (17502350011), we get a palindrome (28507670582).

The spelling of 11005320571 in words is "eleven billion, five million, three hundred twenty thousand, five hundred seventy-one".