1518341408161 has 2 divisors, whose sum is σ = 1518341408162. Its totient is φ = 1518341408160.

The previous prime is 1518341408153. The next prime is 1518341408183. The reversal of 1518341408161 is 1618041438151.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 918559312225 + 599782095936 = 958415^2 + 774456^2 .

It is an emirp because it is prime and its reverse (1618041438151) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1518341408161 - 2³ = 1518341408153 is a prime.

It is not a weakly prime, because it can be changed into another prime (1518341408761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 759170704080 + 759170704081.

It is an arithmetic number, because the mean of its divisors is an integer number (759170704081).

Almost surely, 2^{1518341408161} is an apocalyptic number.

It is an amenable number.

1518341408161 is a deficient number, since it is larger than the sum of its proper divisors (1).

1518341408161 is an equidigital number, since it uses as much as digits as its factorization.

1518341408161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 92160, while the sum is 43.

The spelling of 1518341408161 in words is "one trillion, five hundred eighteen billion, three hundred forty-one million, four hundred eight thousand, one hundred sixty-one".