20111160566 has 16 divisors (see below), whose sum is σ = 34517387520. Its totient is φ = 8608790760.

The previous prime is 20111160557. The next prime is 20111160569. The reversal of 20111160566 is 66506111102.

It is a super-2 number, since 2×20111160566² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20111160569) 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 7 ways as a sum of consecutive naturals, for example, 844340 + ... + 867831.

It is an arithmetic number, because the mean of its divisors is an integer number (2157336720).

Almost surely, 2^20111160566 is an apocalyptic number.

20111160566 is a deficient number, since it is larger than the sum of its proper divisors (14406226954).

20111160566 is a wasteful number, since it uses less digits than its factorization.

20111160566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1713019.

The product of its (nonzero) digits is 2160, while the sum is 29.

Adding to 20111160566 its reverse (66506111102), we get a palindrome (86617271668).

The spelling of 20111160566 in words is "twenty billion, one hundred eleven million, one hundred sixty thousand, five hundred sixty-six".