11611144071 has 16 divisors (see below), whose sum is σ = 17209770720. Its totient is φ = 7737128640.

The previous prime is 11611144067. The next prime is 11611144079. The reversal of 11611144071 is 17044111611.

11611144071 is a `hidden beast` number, since 1 + 1 + 611 + 1 + 4 + 40 + 7 + 1 = 666.

It is not a de Polignac number, because 11611144071 - 2² = 11611144067 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11611144079) 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, 41740 + ... + 158001.

It is an arithmetic number, because the mean of its divisors is an integer number (1075610670).

Almost surely, 2^11611144071 is an apocalyptic number.

11611144071 is a deficient number, since it is larger than the sum of its proper divisors (5598626649).

11611144071 is a wasteful number, since it uses less digits than its factorization.

11611144071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201903 (or 201897 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 27.

Adding to 11611144071 its reverse (17044111611), we get a palindrome (28655255682).

The spelling of 11611144071 in words is "eleven billion, six hundred eleven million, one hundred forty-four thousand, seventy-one".