12427982243 has 16 divisors (see below), whose sum is σ = 13839849216. Its totient is φ = 11106001920.

The previous prime is 12427982221. The next prime is 12427982257. The reversal of 12427982243 is 34228972421.

It is a cyclic number.

It is not a de Polignac number, because 12427982243 - 2¹⁴ = 12427965859 is a prime.

It is a super-2 number, since 2×12427982243² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12427982194 and 12427982203.

It is not an unprimeable number, because it can be changed into a prime (12427982543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 194546 + ... + 250407.

It is an arithmetic number, because the mean of its divisors is an integer number (864990576).

Almost surely, 2^12427982243 is an apocalyptic number.

12427982243 is a deficient number, since it is larger than the sum of its proper divisors (1411866973).

12427982243 is a wasteful number, since it uses less digits than its factorization.

12427982243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 445054.

The product of its digits is 387072, while the sum is 44.

The spelling of 12427982243 in words is "twelve billion, four hundred twenty-seven million, nine hundred eighty-two thousand, two hundred forty-three".