12780390107 has 2 divisors, whose sum is σ = 12780390108. Its totient is φ = 12780390106.

The previous prime is 12780390037. The next prime is 12780390127. The reversal of 12780390107 is 70109308721.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12780390107 - 2⁸ = 12780389851 is a prime.

It is not a weakly prime, because it can be changed into another prime (12780390127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6390195053 + 6390195054.

It is an arithmetic number, because the mean of its divisors is an integer number (6390195054).

Almost surely, 2^12780390107 is an apocalyptic number.

12780390107 is a deficient number, since it is larger than the sum of its proper divisors (1).

12780390107 is an equidigital number, since it uses as much as digits as its factorization.

12780390107 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21168, while the sum is 38.

Adding to 12780390107 its reverse (70109308721), we get a palindrome (82889698828).

The spelling of 12780390107 in words is "twelve billion, seven hundred eighty million, three hundred ninety thousand, one hundred seven".