12365566080 has 256 divisors, whose sum is σ = 47696636160. Its totient is φ = 2660106240.

The previous prime is 12365566069. The next prime is 12365566133. The reversal of 12365566080 is 8066556321.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 201420 + ... + 255540.

It is an arithmetic number, because the mean of its divisors is an integer number (186314985).

Almost surely, 2^12365566080 is an apocalyptic number.

12365566080 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 12365566080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23848318080).

12365566080 is an abundant number, since it is smaller than the sum of its proper divisors (35331070080).

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

12365566080 is a wasteful number, since it uses less digits than its factorization.

12365566080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54167 (or 54155 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 42.

The spelling of 12365566080 in words is "twelve billion, three hundred sixty-five million, five hundred sixty-six thousand, eighty".