11143450161 has 24 divisors (see below), whose sum is σ = 16202893824. Its totient is φ = 7379785440.

The previous prime is 11143450151. The next prime is 11143450169. The reversal of 11143450161 is 16105434111.

11143450161 is a `hidden beast` number, since 1 + 11 + 43 + 450 + 161 = 666.

It is not a de Polignac number, because 11143450161 - 2⁷ = 11143450033 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11143450169) 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, 1348735 + ... + 1356971.

It is an arithmetic number, because the mean of its divisors is an integer number (675120576).

Almost surely, 2^11143450161 is an apocalyptic number.

It is an amenable number.

11143450161 is a deficient number, since it is larger than the sum of its proper divisors (5059443663).

11143450161 is a wasteful number, since it uses less digits than its factorization.

11143450161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9221 (or 9218 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

Adding to 11143450161 its reverse (16105434111), we get a palindrome (27248884272).

The spelling of 11143450161 in words is "eleven billion, one hundred forty-three million, four hundred fifty thousand, one hundred sixty-one".