12406445056 has 22 divisors (see below), whose sum is σ = 24800776490. Its totient is φ = 6203222016.

The previous prime is 12406445053. The next prime is 12406445059. The reversal of 12406445056 is 65054460421.

It is an interprime number because it is at equal distance from previous prime (12406445053) and next prime (12406445059).

It can be written as a sum of positive squares in only one way, i.e., 11402822656 + 1003622400 = 106784^2 + 31680^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12406445053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6056811 + ... + 6058858.

Almost surely, 2^12406445056 is an apocalyptic number.

12406445056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12406445056 is a deficient number, since it is larger than the sum of its proper divisors (12394331434).

12406445056 is an equidigital number, since it uses as much as digits as its factorization.

12406445056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12115689 (or 12115671 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 37.

The spelling of 12406445056 in words is "twelve billion, four hundred six million, four hundred forty-five thousand, fifty-six".