12245567791 has 2 divisors, whose sum is σ = 12245567792. Its totient is φ = 12245567790.

The previous prime is 12245567777. The next prime is 12245567809. The reversal of 12245567791 is 19776554221.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12245567791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12245567731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6122783895 + 6122783896.

It is an arithmetic number, because the mean of its divisors is an integer number (6122783896).

Almost surely, 2^12245567791 is an apocalyptic number.

12245567791 is a deficient number, since it is larger than the sum of its proper divisors (1).

12245567791 is an equidigital number, since it uses as much as digits as its factorization.

12245567791 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1058400, while the sum is 49.

The spelling of 12245567791 in words is "twelve billion, two hundred forty-five million, five hundred sixty-seven thousand, seven hundred ninety-one".