12680009856 has 96 divisors (see below), whose sum is σ = 37665189120. Its totient is φ = 4090314240.

The previous prime is 12680009833. The next prime is 12680009863. The reversal of 12680009856 is 65890008621.

It is a tau number, because it is divible by the number of its divisors (96).

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, 141820 + ... + 213243.

It is an arithmetic number, because the mean of its divisors is an integer number (392345720).

Almost surely, 2^12680009856 is an apocalyptic number.

12680009856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12680009856 is an abundant number, since it is smaller than the sum of its proper divisors (24985179264).

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

12680009856 is a wasteful number, since it uses less digits than its factorization.

12680009856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355114 (or 355099 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 45.

The spelling of 12680009856 in words is "twelve billion, six hundred eighty million, nine thousand, eight hundred fifty-six".