12966081280 has 36 divisors (see below), whose sum is σ = 31057819632. Its totient is φ = 5186432000.

The previous prime is 12966081259. The next prime is 12966081287. The reversal of 12966081280 is 8218066921.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (12966081287) 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 3 ways as a sum of consecutive naturals, for example, 5063596 + ... + 5066155.

It is an arithmetic number, because the mean of its divisors is an integer number (862717212).

Almost surely, 2^12966081280 is an apocalyptic number.

12966081280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12966081280 is an abundant number, since it is smaller than the sum of its proper divisors (18091738352).

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

12966081280 is an equidigital number, since it uses as much as digits as its factorization.

12966081280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10129772 (or 10129758 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 43.

The spelling of 12966081280 in words is "twelve billion, nine hundred sixty-six million, eighty-one thousand, two hundred eighty".