11663043123 has 64 divisors (see below), whose sum is σ = 16641884160. Its totient is φ = 7257331200.

The previous prime is 11663043109. The next prime is 11663043131. The reversal of 11663043123 is 32134036611.

It is not a de Polignac number, because 11663043123 - 2²² = 11658848819 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11663043323) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 61062958 + ... + 61063148.

It is an arithmetic number, because the mean of its divisors is an integer number (260029440).

Almost surely, 2^11663043123 is an apocalyptic number.

11663043123 is a deficient number, since it is larger than the sum of its proper divisors (4978841037).

11663043123 is a wasteful number, since it uses less digits than its factorization.

11663043123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 480.

The product of its (nonzero) digits is 7776, while the sum is 30.

Adding to 11663043123 its reverse (32134036611), we get a palindrome (43797079734).

The spelling of 11663043123 in words is "eleven billion, six hundred sixty-three million, forty-three thousand, one hundred twenty-three".