11551110066 has 24 divisors (see below), whose sum is σ = 25030753020. Its totient is φ = 3849854976.

The previous prime is 11551110049. The next prime is 11551110079. The reversal of 11551110066 is 66001115511.

11551110066 is a `hidden beast` number, since 1 + 1 + 551 + 1 + 100 + 6 + 6 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 11396630025 + 154480041 = 106755^2 + 12429^2 .

It is a zygodrome in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 110130 + ... + 187698.

Almost surely, 2^11551110066 is an apocalyptic number.

11551110066 is an abundant number, since it is smaller than the sum of its proper divisors (13479642954).

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

11551110066 is a wasteful number, since it uses less digits than its factorization.

11551110066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85850 (or 85847 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 27.

Adding to 11551110066 its reverse (66001115511), we get a palindrome (77552225577).

Subtracting 11551110066 from its reverse (66001115511), we obtain a palindrome (54450005445).

The spelling of 11551110066 in words is "eleven billion, five hundred fifty-one million, one hundred ten thousand, sixty-six".