163456617241 has 2 divisors, whose sum is σ = 163456617242. Its totient is φ = 163456617240.

The previous prime is 163456617223. The next prime is 163456617253. The reversal of 163456617241 is 142716654361.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 155232848016 + 8223769225 = 393996^2 + 90685^2 .

It is an emirp because it is prime and its reverse (142716654361) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 163456617241 - 2⁵ = 163456617209 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 163456617191 and 163456617200.

It is not a weakly prime, because it can be changed into another prime (163456617271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81728308620 + 81728308621.

It is an arithmetic number, because the mean of its divisors is an integer number (81728308621).

Almost surely, 2^163456617241 is an apocalyptic number.

It is an amenable number.

163456617241 is a deficient number, since it is larger than the sum of its proper divisors (1).

163456617241 is an equidigital number, since it uses as much as digits as its factorization.

163456617241 is an evil number, because the sum of its binary digits is even.

The product of its digits is 725760, while the sum is 46.

The spelling of 163456617241 in words is "one hundred sixty-three billion, four hundred fifty-six million, six hundred seventeen thousand, two hundred forty-one".