12787681398 has 16 divisors (see below), whose sum is σ = 25611443760. Its totient is φ = 4256546976.

The previous prime is 12787681391. The next prime is 12787681411. The reversal of 12787681398 is 89318678721.

12787681398 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12787681391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1498765 + ... + 1507272.

It is an arithmetic number, because the mean of its divisors is an integer number (1600715235).

Almost surely, 2^12787681398 is an apocalyptic number.

12787681398 is an abundant number, since it is smaller than the sum of its proper divisors (12823762362).

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

12787681398 is a wasteful number, since it uses less digits than its factorization.

12787681398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3006751.

The product of its digits is 8128512, while the sum is 60.

The spelling of 12787681398 in words is "twelve billion, seven hundred eighty-seven million, six hundred eighty-one thousand, three hundred ninety-eight".