12712808161 has 8 divisors (see below), whose sum is σ = 12902713704. Its totient is φ = 12523328640.

The previous prime is 12712808153. The next prime is 12712808179. The reversal of 12712808161 is 16180821721.

It can be written as a sum of positive squares in 4 ways, for example, as 12645136 + 12700163025 = 3556^2 + 112695^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12712808161 - 2³ = 12712808153 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12712808161.

It is not an unprimeable number, because it can be changed into a prime (12712808191) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46126 + ... + 165991.

It is an arithmetic number, because the mean of its divisors is an integer number (1612839213).

Almost surely, 2^12712808161 is an apocalyptic number.

It is an amenable number.

12712808161 is a deficient number, since it is larger than the sum of its proper divisors (189905543).

12712808161 is an equidigital number, since it uses as much as digits as its factorization.

12712808161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213011.

The product of its (nonzero) digits is 10752, while the sum is 37.

The spelling of 12712808161 in words is "twelve billion, seven hundred twelve million, eight hundred eight thousand, one hundred sixty-one".