12667602161 has 2 divisors, whose sum is σ = 12667602162. Its totient is φ = 12667602160.

The previous prime is 12667602151. The next prime is 12667602203. The reversal of 12667602161 is 16120676621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9972019600 + 2695582561 = 99860^2 + 51919^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12667602161 is a prime.

It is not a weakly prime, because it can be changed into another prime (12667602121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6333801080 + 6333801081.

It is an arithmetic number, because the mean of its divisors is an integer number (6333801081).

Almost surely, 2^12667602161 is an apocalyptic number.

It is an amenable number.

12667602161 is a deficient number, since it is larger than the sum of its proper divisors (1).

12667602161 is an equidigital number, since it uses as much as digits as its factorization.

12667602161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 38.

The spelling of 12667602161 in words is "twelve billion, six hundred sixty-seven million, six hundred two thousand, one hundred sixty-one".