12287045844 has 60 divisors (see below), whose sum is σ = 33228402900. Its totient is φ = 3954448512.

The previous prime is 12287045843. The next prime is 12287045899. The reversal of 12287045844 is 44854078221.

12287045844 is a `hidden beast` number, since 122 + 8 + 70 + 458 + 4 + 4 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 5356483344 + 6930562500 = 73188^2 + 83250^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12287045844.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12287045843) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 644449 + ... + 663240.

It is an arithmetic number, because the mean of its divisors is an integer number (553806715).

Almost surely, 2^12287045844 is an apocalyptic number.

It is an amenable number.

12287045844 is an abundant number, since it is smaller than the sum of its proper divisors (20941357056).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12287045844 is a wasteful number, since it uses less digits than its factorization.

12287045844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1307734 (or 1307723 counting only the distinct ones).

The product of its (nonzero) digits is 573440, while the sum is 45.

The spelling of 12287045844 in words is "twelve billion, two hundred eighty-seven million, forty-five thousand, eight hundred forty-four".