12712634647 has 2 divisors, whose sum is σ = 12712634648. Its totient is φ = 12712634646.

The previous prime is 12712634639. The next prime is 12712634651. The reversal of 12712634647 is 74643621721.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12712634647 - 2³ = 12712634639 is a prime.

It is a super-2 number, since 2×12712634647² (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 (12712634657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6356317323 + 6356317324.

It is an arithmetic number, because the mean of its divisors is an integer number (6356317324).

Almost surely, 2^12712634647 is an apocalyptic number.

12712634647 is a deficient number, since it is larger than the sum of its proper divisors (1).

12712634647 is an equidigital number, since it uses as much as digits as its factorization.

12712634647 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 338688, while the sum is 43.

The spelling of 12712634647 in words is "twelve billion, seven hundred twelve million, six hundred thirty-four thousand, six hundred forty-seven".