12272028945 has 32 divisors (see below), whose sum is σ = 21425347584. Its totient is φ = 5948664000.

The previous prime is 12272028943. The next prime is 12272028947. The reversal of 12272028945 is 54982027221.

12272028945 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12272028943) and next prime (12272028947).

It is not a de Polignac number, because 12272028945 - 2¹ = 12272028943 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12272028897 and 12272028906.

It is not an unprimeable number, because it can be changed into a prime (12272028943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1146870 + ... + 1157520.

It is an arithmetic number, because the mean of its divisors is an integer number (669542112).

Almost surely, 2^12272028945 is an apocalyptic number.

12272028945 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12272028945 is a deficient number, since it is larger than the sum of its proper divisors (9153318639).

12272028945 is a wasteful number, since it uses less digits than its factorization.

12272028945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17653.

The product of its (nonzero) digits is 161280, while the sum is 42.

The spelling of 12272028945 in words is "twelve billion, two hundred seventy-two million, twenty-eight thousand, nine hundred forty-five".