11423450220 has 288 divisors, whose sum is σ = 41916123648. Its totient is φ = 2268205056.

The previous prime is 11423450209. The next prime is 11423450221. The reversal of 11423450220 is 2205432411.

It is a zygodrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (11423450221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1201927 + ... + 1211393.

It is an arithmetic number, because the mean of its divisors is an integer number (145542096).

Almost surely, 2^11423450220 is an apocalyptic number.

11423450220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11423450220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20958061824).

11423450220 is an abundant number, since it is smaller than the sum of its proper divisors (30492673428).

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

11423450220 is a wasteful number, since it uses less digits than its factorization.

11423450220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9529 (or 9514 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

Adding to 11423450220 its reverse (2205432411), we get a palindrome (13628882631).

The spelling of 11423450220 in words is "eleven billion, four hundred twenty-three million, four hundred fifty thousand, two hundred twenty".