12285789066 has 72 divisors (see below), whose sum is σ = 27914168100. Its totient is φ = 3904927488.

The previous prime is 12285789059. The next prime is 12285789079. The reversal of 12285789066 is 66098758221.

12285789066 is a `hidden beast` number, since 1 + 2 + 2 + 8 + 578 + 9 + 0 + 66 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 12112103025 + 173686041 = 110055^2 + 13179^2 .

It is a super-2 number, since 2×12285789066² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 3321330 + ... + 3325026.

Almost surely, 2^12285789066 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12285789066, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13957084050).

12285789066 is an abundant number, since it is smaller than the sum of its proper divisors (15628379034).

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

12285789066 is a wasteful number, since it uses less digits than its factorization.

12285789066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4100 (or 4074 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 54.

The spelling of 12285789066 in words is "twelve billion, two hundred eighty-five million, seven hundred eighty-nine thousand, sixty-six".