12705837427 has 2 divisors, whose sum is σ = 12705837428. Its totient is φ = 12705837426.

The previous prime is 12705837421. The next prime is 12705837493. The reversal of 12705837427 is 72473850721.

It is a weak prime.

It is an emirp because it is prime and its reverse (72473850721) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12705837427 - 2⁷ = 12705837299 is a prime.

It is a super-2 number, since 2×12705837427² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12705837421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6352918713 + 6352918714.

It is an arithmetic number, because the mean of its divisors is an integer number (6352918714).

Almost surely, 2^12705837427 is an apocalyptic number.

12705837427 is a deficient number, since it is larger than the sum of its proper divisors (1).

12705837427 is an equidigital number, since it uses as much as digits as its factorization.

12705837427 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 658560, while the sum is 46.

The spelling of 12705837427 in words is "twelve billion, seven hundred five million, eight hundred thirty-seven thousand, four hundred twenty-seven".