11563042311 has 6 divisors (see below), whose sum is σ = 16702172240. Its totient is φ = 7708694868.

The previous prime is 11563042301. The next prime is 11563042367. The reversal of 11563042311 is 11324036511.

It is a happy number.

11563042311 is a `hidden beast` number, since 1 + 1 + 5 + 630 + 4 + 23 + 1 + 1 = 666.

It is not a de Polignac number, because 11563042311 - 2¹⁸ = 11562780167 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11563042301) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 642391231 + ... + 642391248.

Almost surely, 2^11563042311 is an apocalyptic number.

11563042311 is a deficient number, since it is larger than the sum of its proper divisors (5139129929).

11563042311 is a wasteful number, since it uses less digits than its factorization.

11563042311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1284782485 (or 1284782482 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

Adding to 11563042311 its reverse (11324036511), we get a palindrome (22887078822).

The spelling of 11563042311 in words is "eleven billion, five hundred sixty-three million, forty-two thousand, three hundred eleven".