12778844802 has 8 divisors (see below), whose sum is σ = 25557689616. Its totient is φ = 4259614932.

The previous prime is 12778844789. The next prime is 12778844803. The reversal of 12778844802 is 20844887721.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

12778844802 is an admirable number.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (12778844803) 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, 1064903728 + ... + 1064903739.

It is an arithmetic number, because the mean of its divisors is an integer number (3194711202).

Almost surely, 2^12778844802 is an apocalyptic number.

12778844802 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

12778844802 is a wasteful number, since it uses less digits than its factorization.

12778844802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2129807472.

The product of its (nonzero) digits is 1605632, while the sum is 51.

The spelling of 12778844802 in words is "twelve billion, seven hundred seventy-eight million, eight hundred forty-four thousand, eight hundred two".