12746444427 has 12 divisors (see below), whose sum is σ = 18454254624. Its totient is φ = 8477910960.

The previous prime is 12746444411. The next prime is 12746444479. The reversal of 12746444427 is 72444464721.

12746444427 is a `hidden beast` number, since 127 + 4 + 64 + 44 + 427 = 666.

It is not a de Polignac number, because 12746444427 - 2⁴ = 12746444411 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12746464427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1639128 + ... + 1646885.

It is an arithmetic number, because the mean of its divisors is an integer number (1537854552).

Almost surely, 2^12746444427 is an apocalyptic number.

12746444427 is a deficient number, since it is larger than the sum of its proper divisors (5707810197).

12746444427 is a wasteful number, since it uses less digits than its factorization.

12746444427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3286450 (or 3286447 counting only the distinct ones).

The product of its digits is 1204224, while the sum is 45.

The spelling of 12746444427 in words is "twelve billion, seven hundred forty-six million, four hundred forty-four thousand, four hundred twenty-seven".