12780390179 has 2 divisors, whose sum is σ = 12780390180. Its totient is φ = 12780390178.

The previous prime is 12780390157. The next prime is 12780390191. The reversal of 12780390179 is 97109308721.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12780390179 - 2¹⁶ = 12780324643 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (12780390149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6390195089 + 6390195090.

It is an arithmetic number, because the mean of its divisors is an integer number (6390195090).

Almost surely, 2^12780390179 is an apocalyptic number.

12780390179 is a deficient number, since it is larger than the sum of its proper divisors (1).

12780390179 is an equidigital number, since it uses as much as digits as its factorization.

12780390179 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 190512, while the sum is 47.

The spelling of 12780390179 in words is "twelve billion, seven hundred eighty million, three hundred ninety thousand, one hundred seventy-nine".