12446227791 has 12 divisors (see below), whose sum is σ = 17982288168. Its totient is φ = 8295452784.

The previous prime is 12446227769. The next prime is 12446227823. The reversal of 12446227791 is 19772264421.

12446227791 is a `hidden beast` number, since 12 + 4 + 4 + 622 + 7 + 7 + 9 + 1 = 666.

It is not a de Polignac number, because 12446227791 - 2¹⁸ = 12445965647 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12446227091) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 130105 + ... + 204498.

It is an arithmetic number, because the mean of its divisors is an integer number (1498524014).

Almost surely, 2^12446227791 is an apocalyptic number.

12446227791 is a deficient number, since it is larger than the sum of its proper divisors (5536060377).

12446227791 is a wasteful number, since it uses less digits than its factorization.

12446227791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338742 (or 338739 counting only the distinct ones).

The product of its digits is 338688, while the sum is 45.

The spelling of 12446227791 in words is "twelve billion, four hundred forty-six million, two hundred twenty-seven thousand, seven hundred ninety-one".