12005627427 has 6 divisors (see below), whose sum is σ = 17341461852. Its totient is φ = 8003751612.

The previous prime is 12005627399. The next prime is 12005627533. The reversal of 12005627427 is 72472650021.

It is a happy number.

12005627427 is a `hidden beast` number, since 1 + 2 + 0 + 0 + 5 + 627 + 4 + 27 = 666.

It is not a de Polignac number, because 12005627427 - 2¹⁸ = 12005365283 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12005627391 and 12005627400.

It is not an unprimeable number, because it can be changed into a prime (12005627027) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 666979293 + ... + 666979310.

It is an arithmetic number, because the mean of its divisors is an integer number (2890243642).

Almost surely, 2^12005627427 is an apocalyptic number.

12005627427 is a deficient number, since it is larger than the sum of its proper divisors (5335834425).

12005627427 is a wasteful number, since it uses less digits than its factorization.

12005627427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1333958609 (or 1333958606 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 36.

The spelling of 12005627427 in words is "twelve billion, five million, six hundred twenty-seven thousand, four hundred twenty-seven".