12705716773 has 2 divisors, whose sum is σ = 12705716774. Its totient is φ = 12705716772.

The previous prime is 12705716759. The next prime is 12705716789. The reversal of 12705716773 is 37761750721.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12647926369 + 57790404 = 112463^2 + 7602^2 .

It is a cyclic number.

It is not a de Polignac number, because 12705716773 - 2¹³ = 12705708581 is a prime.

It is a super-2 number, since 2×12705716773² (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 (12705714773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6352858386 + 6352858387.

It is an arithmetic number, because the mean of its divisors is an integer number (6352858387).

Almost surely, 2^12705716773 is an apocalyptic number.

It is an amenable number.

12705716773 is a deficient number, since it is larger than the sum of its proper divisors (1).

12705716773 is an equidigital number, since it uses as much as digits as its factorization.

12705716773 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432180, while the sum is 46.

The spelling of 12705716773 in words is "twelve billion, seven hundred five million, seven hundred sixteen thousand, seven hundred seventy-three".