12043537707866 has 48 divisors (see below), whose sum is σ = 21112031241000. Its totient is φ = 5137673200128.

The previous prime is 12043537707857. The next prime is 12043537707871. The reversal of 12043537707866 is 66870773534021.

It can be written as a sum of positive squares in 4 ways, for example, as 8642571030625 + 3400966677241 = 2939825^2 + 1844171^2 .

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 19151510 + ... + 19770366.

Almost surely, 2^{12043537707866} is an apocalyptic number.

12043537707866 is a deficient number, since it is larger than the sum of its proper divisors (9068493533134).

12043537707866 is a wasteful number, since it uses less digits than its factorization.

12043537707866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 619791 (or 619784 counting only the distinct ones).

The product of its (nonzero) digits is 35562240, while the sum is 59.

The spelling of 12043537707866 in words is "twelve trillion, forty-three billion, five hundred thirty-seven million, seven hundred seven thousand, eight hundred sixty-six".