11144471161 has 16 divisors (see below), whose sum is σ = 11601192960. Its totient is φ = 10692763200.

The previous prime is 11144471141. The next prime is 11144471167. The reversal of 11144471161 is 16117444111.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 11144471161 - 2³¹ = 8996987513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11144471167) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4739136 + ... + 4741486.

It is an arithmetic number, because the mean of its divisors is an integer number (725074560).

Almost surely, 2^11144471161 is an apocalyptic number.

It is an amenable number.

11144471161 is a deficient number, since it is larger than the sum of its proper divisors (456721799).

11144471161 is a wasteful number, since it uses less digits than its factorization.

11144471161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3336.

The product of its digits is 2688, while the sum is 31.

The spelling of 11144471161 in words is "eleven billion, one hundred forty-four million, four hundred seventy-one thousand, one hundred sixty-one".