11663411123 has 24 divisors (see below), whose sum is σ = 14530932000. Its totient is φ = 9166120704.

The previous prime is 11663411093. The next prime is 11663411131. The reversal of 11663411123 is 32111436611.

It is not a de Polignac number, because 11663411123 - 2¹⁶ = 11663345587 is a prime.

It is a super-2 number, since 2×11663411123² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11663411143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 143183 + ... + 209351.

It is an arithmetic number, because the mean of its divisors is an integer number (605455500).

Almost surely, 2^11663411123 is an apocalyptic number.

11663411123 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

11663411123 is a deficient number, since it is larger than the sum of its proper divisors (2867520877).

11663411123 is a wasteful number, since it uses less digits than its factorization.

11663411123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66351 (or 66338 counting only the distinct ones).

The product of its digits is 2592, while the sum is 29.

Adding to 11663411123 its reverse (32111436611), we get a palindrome (43774847734).

The spelling of 11663411123 in words is "eleven billion, six hundred sixty-three million, four hundred eleven thousand, one hundred twenty-three".