12427447069 has 2 divisors, whose sum is σ = 12427447070. Its totient is φ = 12427447068.

The previous prime is 12427447033. The next prime is 12427447129. The reversal of 12427447069 is 96074472421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12091641444 + 335805625 = 109962^2 + 18325^2 .

It is a cyclic number.

It is not a de Polignac number, because 12427447069 - 2¹¹ = 12427445021 is a prime.

It is a super-2 number, since 2×12427447069² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12427441069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6213723534 + 6213723535.

It is an arithmetic number, because the mean of its divisors is an integer number (6213723535).

Almost surely, 2^12427447069 is an apocalyptic number.

It is an amenable number.

12427447069 is a deficient number, since it is larger than the sum of its proper divisors (1).

12427447069 is an equidigital number, since it uses as much as digits as its factorization.

12427447069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 677376, while the sum is 46.

The spelling of 12427447069 in words is "twelve billion, four hundred twenty-seven million, four hundred forty-seven thousand, sixty-nine".