11123063820 has 72 divisors (see below), whose sum is σ = 36807235920. Its totient is φ = 2696499840.

The previous prime is 11123063747. The next prime is 11123063827. The reversal of 11123063820 is 2836032111.

It is a happy number.

11123063820 is a `hidden beast` number, since 1 + 1 + 1 + 2 + 3 + 0 + 638 + 20 = 666.

It is not an unprimeable number, because it can be changed into a prime (11123063827) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2806875 + ... + 2810834.

It is an arithmetic number, because the mean of its divisors is an integer number (511211610).

Almost surely, 2^11123063820 is an apocalyptic number.

11123063820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11123063820 is an abundant number, since it is smaller than the sum of its proper divisors (25684172100).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11123063820 is a wasteful number, since it uses less digits than its factorization.

11123063820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5617735 (or 5617730 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

Adding to 11123063820 its reverse (2836032111), we get a palindrome (13959095931).

The spelling of 11123063820 in words is "eleven billion, one hundred twenty-three million, sixty-three thousand, eight hundred twenty".