12784887680 has 32 divisors (see below), whose sum is σ = 30563873640. Its totient is φ = 5113954816.

The previous prime is 12784887677. The next prime is 12784887683. The reversal of 12784887680 is 8678848721.

It is an interprime number because it is at equal distance from previous prime (12784887677) and next prime (12784887683).

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12784887683) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9987554 + ... + 9988833.

Almost surely, 2^12784887680 is an apocalyptic number.

12784887680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12784887680 is an abundant number, since it is smaller than the sum of its proper divisors (17778985960).

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

12784887680 is an equidigital number, since it uses as much as digits as its factorization.

12784887680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19976406 (or 19976394 counting only the distinct ones).

The product of its (nonzero) digits is 9633792, while the sum is 59.

The spelling of 12784887680 in words is "twelve billion, seven hundred eighty-four million, eight hundred eighty-seven thousand, six hundred eighty".