12780518711 has 2 divisors, whose sum is σ = 12780518712. Its totient is φ = 12780518710.

The previous prime is 12780518683. The next prime is 12780518719. The reversal of 12780518711 is 11781508721.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12780518711 is a prime.

It is a super-2 number, since 2×12780518711² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12780518719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6390259355 + 6390259356.

It is an arithmetic number, because the mean of its divisors is an integer number (6390259356).

Almost surely, 2^12780518711 is an apocalyptic number.

12780518711 is a deficient number, since it is larger than the sum of its proper divisors (1).

12780518711 is an equidigital number, since it uses as much as digits as its factorization.

12780518711 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31360, while the sum is 41.

The spelling of 12780518711 in words is "twelve billion, seven hundred eighty million, five hundred eighteen thousand, seven hundred eleven".