12601790161 has 2 divisors, whose sum is σ = 12601790162. Its totient is φ = 12601790160.

The previous prime is 12601790119. The next prime is 12601790167. The reversal of 12601790161 is 16109710621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9432100161 + 3169690000 = 97119^2 + 56300^2 .

It is an emirp because it is prime and its reverse (16109710621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12601790161 - 2²¹ = 12599693009 is a prime.

It is not a weakly prime, because it can be changed into another prime (12601790167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6300895080 + 6300895081.

It is an arithmetic number, because the mean of its divisors is an integer number (6300895081).

Almost surely, 2^12601790161 is an apocalyptic number.

It is an amenable number.

12601790161 is a deficient number, since it is larger than the sum of its proper divisors (1).

12601790161 is an equidigital number, since it uses as much as digits as its factorization.

12601790161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 34.

The spelling of 12601790161 in words is "twelve billion, six hundred one million, seven hundred ninety thousand, one hundred sixty-one".