12381982327 has 32 divisors (see below), whose sum is σ = 15080131584. Its totient is φ = 10014710400.

The previous prime is 12381982297. The next prime is 12381982367. The reversal of 12381982327 is 72328918321.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12381982327 is a prime.

It is a super-2 number, since 2×12381982327² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12381982367) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 555202 + ... + 577072.

It is an arithmetic number, because the mean of its divisors is an integer number (471254112).

Almost surely, 2^12381982327 is an apocalyptic number.

12381982327 is a deficient number, since it is larger than the sum of its proper divisors (2698149257).

12381982327 is a wasteful number, since it uses less digits than its factorization.

12381982327 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22039.

The product of its digits is 290304, while the sum is 46.

The spelling of 12381982327 in words is "twelve billion, three hundred eighty-one million, nine hundred eighty-two thousand, three hundred twenty-seven".