12478668311 has 2 divisors, whose sum is σ = 12478668312. Its totient is φ = 12478668310.

The previous prime is 12478668299. The next prime is 12478668329. The reversal of 12478668311 is 11386687421.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12478668311 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12478668911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6239334155 + 6239334156.

It is an arithmetic number, because the mean of its divisors is an integer number (6239334156).

Almost surely, 2^12478668311 is an apocalyptic number.

12478668311 is a deficient number, since it is larger than the sum of its proper divisors (1).

12478668311 is an equidigital number, since it uses as much as digits as its factorization.

12478668311 is an evil number, because the sum of its binary digits is even.

The product of its digits is 387072, while the sum is 47.

The spelling of 12478668311 in words is "twelve billion, four hundred seventy-eight million, six hundred sixty-eight thousand, three hundred eleven".