12780340112 has 10 divisors (see below), whose sum is σ = 24761908998. Its totient is φ = 6390170048.

The previous prime is 12780340099. The next prime is 12780340187. The reversal of 12780340112 is 21104308721.

It can be written as a sum of positive squares in only one way, i.e., 12297922816 + 482417296 = 110896^2 + 21964^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 399385613 + ... + 399385644.

Almost surely, 2^12780340112 is an apocalyptic number.

It is an amenable number.

12780340112 is a deficient number, since it is larger than the sum of its proper divisors (11981568886).

12780340112 is an equidigital number, since it uses as much as digits as its factorization.

12780340112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 798771265 (or 798771259 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 29.

Adding to 12780340112 its reverse (21104308721), we get a palindrome (33884648833).

The spelling of 12780340112 in words is "twelve billion, seven hundred eighty million, three hundred forty thousand, one hundred twelve".