11201818450 has 24 divisors (see below), whose sum is σ = 21398504292. Its totient is φ = 4359625920.

The previous prime is 11201818427. The next prime is 11201818471. The reversal of 11201818450 is 5481810211.

It can be written as a sum of positive squares in 6 ways, for example, as 6299438161 + 4902380289 = 79369^2 + 70017^2 .

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 3025669 + ... + 3029368.

Almost surely, 2^11201818450 is an apocalyptic number.

11201818450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11201818450 is a deficient number, since it is larger than the sum of its proper divisors (10196685842).

11201818450 is a wasteful number, since it uses less digits than its factorization.

11201818450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6055086 (or 6055081 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 31.

The spelling of 11201818450 in words is "eleven billion, two hundred one million, eight hundred eighteen thousand, four hundred fifty".