12778040612 has 6 divisors (see below), whose sum is σ = 22361571078. Its totient is φ = 6389020304.

The previous prime is 12778040573. The next prime is 12778040617. The reversal of 12778040612 is 21604087721.

12778040612 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 8623722496 + 4154318116 = 92864^2 + 64454^2 .

It is not an unprimeable number, because it can be changed into a prime (12778040617) 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 as a sum of consecutive naturals, namely, 1597255073 + ... + 1597255080.

It is an arithmetic number, because the mean of its divisors is an integer number (3726928513).

Almost surely, 2^12778040612 is an apocalyptic number.

It is an amenable number.

12778040612 is a deficient number, since it is larger than the sum of its proper divisors (9583530466).

12778040612 is a wasteful number, since it uses less digits than its factorization.

12778040612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3194510157 (or 3194510155 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 38.

The spelling of 12778040612 in words is "twelve billion, seven hundred seventy-eight million, forty thousand, six hundred twelve".